Malicious PDF — malware analysis report

Static analysis result for SHA-256 5adaab0c06d3a54a…

MALICIOUS

PDF

94.8 KB Created: 2021-08-04 02:37:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: ad0e4ec7f578f3dbe2232dcfcab9e3d9 SHA-1: 0cb2298c0f85716ffcd273faf5accb776741f5d7 SHA-256: 5adaab0c06d3a54ab53d203b3a6c7513fa7dc442cb2d3af34dbba1feacd126ee
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, indicating a link farm designed to redirect users to potentially harmful content. The presence of urgency language further supports a phishing or scam-related attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

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://eakqshop.com/ckfinder/images_store/files/63045761826.pdf In PDF document text
    • http://agrion.org/upload/fichier/talovifugagupim.pdfIn PDF document text
    • https://inclinedigital.com/wp-content/plugins/formcraft/file-upload/server/content/files/16109be873f072---jojimolepodesiw.pdfIn PDF document text
    • https://raljob.com/userfiles/file/zavanugom.pdfIn PDF document text
    • http://juha.be/_files/file/pozaraputafijamujuwoxafa.pdfIn PDF document text
    • http://autoset66.ru/admin/ckfinder/userfiles/files/32829337101.pdfIn PDF document text
    • http://pck.malopolska.pl/wp-content/plugins/super-forms/uploads/php/files/9c2547dfbc8bb2c0bfe3a2146c743cb7/12402871286.pdfIn PDF document text
    • https://phase1acoustics.com/wp-content/plugins/formcraft/file-upload/server/content/files/160803f45d3816---lofosox.pdfIn PDF document text
    • http://princeverma.in/uploads/files/defeparilarinip.pdfIn PDF document text
    • http://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160f64f00e89d6---11272228721.pdfIn PDF document text
    • http://ingpiazza.eu/userfiles/files/fezadi.pdfIn PDF document text
    • http://velocimapper.com//webfiles/file/bumuf.pdfIn PDF document text
    • http://eduomania.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072636b97bc1---navirapujijizaxafejazidim.pdfIn PDF document text
    • http://goozzl.com/userfiles/files/9220266504.pdfIn PDF document text
    • https://theemperorsoldclothes.co.uk/wp-content/plugins/super-forms/uploads/php/files/ad3rn6lvodq4mjmi4gj1c61pb9/86616894970.pdfIn PDF document text
    • https://jiptv.nl/wp-content/plugins/super-forms/uploads/php/files/8g0hld6hf695odkejilh2mp6no/taninazaxikunalivodegikul.pdfIn PDF document text
    • https://dptech.vn/uploads/files/widemakuruvilutum.pdfIn PDF document text
    • http://www.next-conseil.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16083610e53065---siwafu.pdfIn PDF document text
    • http://mbcasc.net/imgs/file/ribapiriletawu.pdfIn PDF document text
    • https://alnahamgroup.com/userfiles/file/92382470141.pdfIn PDF document text
    • https://cafemocion.com/userfiles/file/46973346668.pdfIn PDF document text
    • https://southwestlooms.com/admin/userfiles/files/mekiwunajewinazotur.pdfIn PDF document text
    • http://osoboebludo.com/ckfinder/userfiles/files/joduwugetepax.pdfIn PDF document text
    • https://alphacleanwashing.com/wp-content/plugins/super-forms/uploads/php/files/eff1603e2db86d51f56b5f718854e03e/dasabipubelaxijulanudezu.pdfIn PDF document text
    • https://home18.ru/wp-content/plugins/super-forms/uploads/php/files/60dd6dc9e52e3e651f2787a5b5c839f6/50384524012.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=how+to+mix+tile+clad+hsPDF 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_off00010ebc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EBC 10612 bytes
SHA-256: 985eb8939ed2df24ecf949b40bbffeba9c949260bc9ed351e7893ae24c54fba8
font_01_sfnt_off00012702.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12702 17500 bytes
SHA-256: c01785d456c434d6b00d7f029eb7cefe6b600b6145b0ce536510a7a040ab27f3
font_02_sfnt_off0001549b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1549B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1