Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ab53ce8b47b5242…

MALICIOUS

PDF

109.3 KB Created: 2021-06-25 18:54:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 3f0a3d22b68905604601a7b8d473d91f SHA-1: 9ac151df4252912067311d4302239658f9179b25 SHA-256: 2ab53ce8b47b524239cb37d62c3341eb20bd672ecc63c6b3b479c170c1e12030
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link farm pointing to multiple compromised WordPress sites, suggesting an attempt to distribute malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and embedded URLs are indicative of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9797

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://derma-dts.de/files/file/dawasirexupaxavigusivusur.pdf In PDF document text
    • https://readxyz.org/wp-content/plugins/super-forms/uploads/php/files/747a2c01d5a671a9aa72916926c2c957/36935291615.pdfIn PDF document text
    • http://friluftsgruppen.se/wp-content/plugins/formcraft/file-upload/server/content/files/1606d132a451c4---92379482885.pdfIn PDF document text
    • https://www.havanasalsa-dance-tours.com/wp-content/plugins/super-forms/uploads/php/files/21acf1627164ea7c8c0bbeacda971a39/11191851487.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075ca8d6bcf7---vebotezonelumaf.pdfIn PDF document text
    • https://www.hospedeagora.com.br/wp-content/plugins/super-forms/uploads/php/files/vfgivvmugqoijs9vtgokgggb2r/wodulegixe.pdfIn PDF document text
    • http://atenngo.com/admin/sites/site/documents/gunatej.pdfIn PDF document text
    • https://nobleanimalsanctuary.org/wp-content/plugins/super-forms/uploads/php/files/tmp/86170565123.pdfIn PDF document text
    • https://www.lumisolar.pe/wp-content/plugins/formcraft/file-upload/server/content/files/160b69e31e44e8---goximixisew.pdfIn PDF document text
    • https://www.capitalroofingct.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f4125f1379---batuzi.pdfIn PDF document text
    • https://www.helpforbusymums.com/wp-content/plugins/super-forms/uploads/php/files/32ffce74a20b883c66322f7cb917fe87/tuviwafefanemenidid.pdfIn PDF document text
    • http://alexlunacoach.com/img/editor/file/15155858045.pdfIn PDF document text
    • http://rts-3.ru/upload/files/88677009795.pdfIn PDF document text
    • https://binarbaidfabrication.com/public_html/userfiles/file/78186666391.pdfIn PDF document text
    • http://dallassymphonyleague.com/clients/1/14/14bb4a025281f1a32078cb68571f7cf3/File/vovokewagisimopugabomavot.pdfIn PDF document text
    • http://pobierzplik.pl/uploads/files/jozawov.pdfIn PDF document text
    • https://amblamy.ee/upload/file/nonutigenow.pdfIn PDF document text
    • http://banglatalkies.com/dynamic-images/cms/file/solonur.pdfIn PDF document text
    • https://bayardplaza.co.uk/wp-content/plugins/super-forms/uploads/php/files/jofg5d0cdmvl3h558u6t7t0n46/63668598312.pdfIn PDF document text
    • https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/0qprr824lpco1e3rmtpds8qbvc/23824859982.pdfIn PDF document text
    • https://shayangroup.net/wp-content/plugins/super-forms/uploads/php/files/f905e1caa06ffa08b259630d96fa6c68/regotude.pdfIn PDF document text
    • https://bykevin.com/wp-content/plugins/super-forms/uploads/php/files/399d0484a9c6c78acfe40ee4281ab4d7/96923952286.pdfIn PDF document text
    • https://phase1acoustics.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081323c459d5---bupubosopovumamesusexaw.pdfIn PDF document text
    • https://higher-reason.com/wp-content/plugins/super-forms/uploads/php/files/oce2f0ij8c6mm9sdjkqjidsmil/gusosafekovowasewunasu.pdfIn PDF document text
    • https://greenturtleproductions.com.au/wp-content/plugins/super-forms/uploads/php/files/6a15d5ac6672303f31dd9a0d1bf9711c/32084881858.pdfIn PDF document text
    • https://xn----8sbaavnccwq4am.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/273610ede2865e2ffa588d32effb8d09/84887689188.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=the+bubonic+plague+was+spread+byPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001440e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1440E 11100 bytes
SHA-256: b535753e5842ffa4c068f6520ce397acb7834a14555e0a657d3f478687a39e8b
font_01_sfnt_off00015d76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15D76 19084 bytes
SHA-256: d7130b1763f2b4a8493f8cf3062b5b15c4d9b52004ae5352c660928b367a3d33
font_02_sfnt_off00018f7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18F7F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.