Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2d20d0a32d1d28e…

MALICIOUS

PDF

83.4 KB Created: 2021-08-26 00:56:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 0986d3f17babdd73942caec556ee27b4 SHA-1: eab86a4c09be8c7cee0d19de7d1a2770936a7aaa SHA-256: c2d20d0a32d1d28ead6e53175239850dde3ac183453b9514a2f2120b20090fbe
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, distributing links across multiple compromised CMS uploads and disposable domains, likely to phish users or lead them to further malicious content. The embedded URLs suggest an attempt to direct users to external, untrusted resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://fotossc.pl/_files/file/27666575464.pdf In PDF document text
    • https://www.grecosalesinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d3eaea00fc4---79711823624.pdfIn PDF document text
    • https://www.asahinafunnels.com/wp-content/plugins/super-forms/uploads/php/files/0l2es9ojcoi279j9v0erg6mm4m/xenivakakax.pdfIn PDF document text
    • http://dgjinhak.kr/DATA/upload/files/202108080928459107.pdfIn PDF document text
    • https://rsun.pro/admin/ckfinder/userfiles/files/22208768791.pdfIn PDF document text
    • https://questyme.ca/userfiles/file/xewaxapimekin.pdfIn PDF document text
    • http://www.ebsjosepirosamaria.com/wp-content/plugins/formcraft/file-upload/server/content/files/16123bf370ef69---biduwolagajexa.pdfIn PDF document text
    • http://www.lbf-cosmetics.com/website/wp-content/plugins/formcraft/file-upload/server/content/files/160c2c1e761a99---tazifuvikiravefusebedij.pdfIn PDF document text
    • https://grnca.org/img/files/files/jenemorubopuxafezetobewos.pdfIn PDF document text
    • https://www.tessilgiada.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607641130df78---xosikezaganeviwek.pdfIn PDF document text
    • http://staresecurity.com/userfiles/file/lalewito.pdfIn PDF document text
    • https://www.lipfish.no/wp-content/plugins/formcraft/file-upload/server/content/files/1608469f313ed2---77442107314.pdfIn PDF document text
    • http://ne-moloko.ee/wp-content/plugins/super-forms/uploads/php/files/e61ec634defc07ea3cb4adb506853620/17659821961.pdfIn PDF document text
    • http://serramentisiciliano.it/userfiles/files/benoninopavofetojebim.pdfIn PDF document text
    • http://showplus.ae/userfiles/files/13001424948.pdfIn PDF document text
    • http://garystrike.com/clients/3/30/301ae0ed988f9237e4cb8f8c41f6cb36/File/11653560388.pdfIn PDF document text
    • http://pizzeria-millemiglia.de/app/webroot/img/editor/file/42533344802.pdfIn PDF document text
    • http://jx4d.com/userfiles/file/17450245310.pdfIn PDF document text
    • http://dangkyidol.com/wp-content/plugins/super-forms/uploads/php/files/daki4fb42k9i8t3erfirmnar8h/96080002092.pdfIn PDF document text
    • http://biotledlight.com/userfiles/file///15036160407.pdfIn PDF document text
    • https://uslugiinzynierskie.eu/eurostyl/photos/file/27688673113.pdfIn PDF document text
    • http://www.absolutecateringla.com/wp-content/plugins/formcraft/file-upload/server/content/files/160731aee5f434---bigoxamoduweval.pdfIn PDF document text
    • http://pansophers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8db24ad76f---60068273729.pdfIn PDF document text
    • http://nesemlak.com/test/images/uploads/files/gotosuxisaxotifitipelap.pdfIn PDF document text
    • https://www.taxikladis.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160c725c6cea4d---44668970759.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=meaning+of+the+judgement+cardPDF 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_off0000e0f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0F0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f902.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF902 17368 bytes
SHA-256: 55ee568f08f65f848b78429c1db23e3e0f34594ed8562cf9c20358a01b5df975
font_02_sfnt_off00012581.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12581 10932 bytes
SHA-256: 8985fa8fa2d006b888ee3fe94093734247bd89bb9cb0e6ccb66c9fd276f6292d

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