Malicious PDF — malware analysis report

Static analysis result for SHA-256 51b516b1592a8afd…

MALICIOUS

PDF

75.7 KB Created: 2020-12-04 06:46:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: da784dbaa999294122104d1dcabf0742 SHA-1: d83d41aeecf87424b40c3ec3204eef4e4877d285 SHA-256: 51b516b1592a8afdfe30609a9fbfc744978de8c6cfdb4572450926abc25ef581
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 0.9994

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://trafffe.ru/strik?utm_term=tgmd-3+manual+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366376/normal_5fae053c3a220.pdfIn PDF document text
    • https://winugemu.weebly.com/uploads/1/3/1/0/131070294/ragabelata-zetamu.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/lososimap/creative_visualization_by_shakti_gawain.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2acbdbda9c57a97c99165/t/5fc82aa746ef2e08cbab61cd/1606953639795/lighthouse_point_yacht_club_townhomes.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc18f8d0a2757459be7919f/t/5fc6c6cbc953717e09c30c3b/1606862541039/cheap_king_size_bedroom_sets_royal_furniture.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/fozedigomuxunufogunuk.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4e10e2e34347c705dc52c/t/5fc583e56457125654f8c90e/1606779878412/old_fashioned_revolver_destiny_2.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0fd6b1c8c741314323fec/t/5fc99bf43ff94c207e03a5d8/1607048186391/t-_rex_fights_dinosaurs_dominator_edition_mod_apk.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc51b403398ff7515490ab2/t/5fc6187ae6d49a06bb63965c/1606817915051/6139580831.pdfIn PDF document text
    • https://s3.amazonaws.com/wovitiku/burnaware_professional_full_version.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 2

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e03d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE03D 4760 bytes
SHA-256: c1ccc29370448efe25dd25467afb6b4e8c0f8bd61c81f3f69e08efb6f701ddef
font_01_sfnt_off0000f052.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF052 10512 bytes
SHA-256: b3572b2372c28173cf33a08f457bfab5bfd213d16b60354b891e9216b2fac360
font_02_sfnt_off00011424.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11424 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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