Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b6974f42f463404…

MALICIOUS

PDF

57.7 KB Created: 2020-12-01 12:01:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 51a22d43772c47eaff0086d79c4092e0 SHA-1: 2ecfd3058e3e756620960e94abb4c6050831bc61 SHA-256: 9b6974f42f463404a4a70101b48a6975f344fed1fe1a7943050a3f34bba5dd57
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. 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 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://traffine.ru/123?utm_term=the+defining+decade+ebook PDF link annotation
    • https://dizawiwutap.weebly.com/uploads/1/3/4/6/134629961/ragewezexote-lezir.pdfIn PDF document text
    • https://tigibivimibi.weebly.com/uploads/1/3/4/3/134344299/vezakujo.pdfIn PDF document text
    • https://jinokafolamod.weebly.com/uploads/1/3/4/3/134310646/wakukunuxeriga-muzamakewu-vomewaze-livora.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc0e800a879396864085b93/t/5fc3d5dceaf37e3b6411b2dd/1606669789010/12143380458.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf57c39d7936484085380d/1606375364840/gojetorukesodego.pdfIn PDF document text
    • https://s3.amazonaws.com/tiluwisulepam/9812214131.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0baae3dfdd95b60d439b1/t/5fc28c8ae6d49a06bbe55852/1606585483881/usa_studies_weekly_week_8_answer_key.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1015360f2895dc1e86a3c/t/5fc27dd064571256548cbaf3/1606581715794/stormblood_desynth_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f200b5d-459b-4664-ae8b-8e4983fbd374/lfs_tweak_z28_chomikuj.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe3b90f3de5e49b52fc53f/1606302609255/soundcraft_gb4-40_manual.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf627461e25426e1308ac6/1606378101503/movurududiso.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000aaea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAAEA 5132 bytes
SHA-256: 977019fd5f42b5918628144bf7be50e9fa7823460fc9aa630d76e25e99879b7f
font_01_sfnt_off0000bc66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC66 8700 bytes
SHA-256: 20e6ae9252b94b2a2e6118b76ec364bfd27749b5e797639d790c561a6d24bb84

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