Malicious PDF — malware analysis report

Static analysis result for SHA-256 c26e0205fc8fc6bd…

MALICIOUS

PDF

88.6 KB Created: 2020-12-09 00:12:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: d38b0330a725b12a79641567bccbbbb0 SHA-1: d84bedd1fd48c3753f94fd578b801b826e8f2ac7 SHA-256: c26e0205fc8fc6bd5828390da3f51031d36027d3d984315a92aad6c94b213ecb
196 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1539 Steal Application Data T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses an MFA/2FA-themed lure. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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 https://trafffi.ru/strik?utm_term=power+of+2+table+subnetting PDF link annotation
    • https://niresofet.weebly.com/uploads/1/3/2/6/132682193/cf87ab801e7ddb.pdfIn PDF document text
    • https://figuzenage.weebly.com/uploads/1/3/4/4/134472600/399f81b.pdfIn PDF document text
    • https://givifajilodox.weebly.com/uploads/1/3/0/8/130874655/gawibur.pdfIn PDF document text
    • https://raminatu.weebly.com/uploads/1/3/4/5/134579417/libevumakiwonex.pdfIn PDF document text
    • https://kamejufozafa.weebly.com/uploads/1/3/4/8/134891268/8583134.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/gidibesuxi/24828596612.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7e4e13b-5f72-4498-aeaf-8c5bdc92d7cd/los_hechiceros_de_waverly_place_la_pelicula_online_gratis.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2886e92c50b1a1e81da22/t/5fca9a48f1f62239f1897074/1607113289390/zakipe.pdfIn PDF document text
    • https://s3.amazonaws.com/sirasu/wuzekatenevuvo.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbffcc36609fd0ee78c2f31/t/5fc1b1ea3485235c86063a51/1606529514640/pennsylvania_ramp_test_answers.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4b4deaf37e3b6491fb99/1606372184179/84757915701.pdfIn PDF document text
    • https://s3.amazonaws.com/mutirexa/90720489732.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc67134a5bc066edfcb9abb/t/5fcff983ec2ae40ed735ccd4/1607465349350/pisejiniropapirejusita.pdfIn PDF document text
    • 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://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000104e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104E6 5184 bytes
SHA-256: e7e53dedeede8924338a656cf85818766b2ece1feb927871c80e1386ce6322ad
font_01_sfnt_off00011698.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11698 1800 bytes
SHA-256: 6d2a3a16cc464ce72cf05976c7f96a31c93af2202e0dc760c37a694345e222ee
font_02_sfnt_off00011f28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F28 11772 bytes
SHA-256: b3f9562f12d054f2cc6840343a781192a469f3125c7f85b8084024b2ba6cbd61
font_03_sfnt_off00014700.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14700 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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