Malicious PDF — malware analysis report

Static analysis result for SHA-256 70808753ca485481…

MALICIOUS

PDF

73.3 KB Created: 2020-11-18 19:56:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: ebed46efa75fa247cde9efb7f2f82b32 SHA-1: d422684e00923d081775f2697d70f0a4f48ce910 SHA-256: 70808753ca485481f52c1569f25e1c4bd0aa2bb95b339251e7dd53b1c11c2ec7
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 0.9995

Heuristics 5

  • 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.
  • 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://traffnew.ru/123?utm_term=imodgame+hack+clash+of+clans PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369141/normal_5fa464171052b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366044/normal_5f88179143657.pdfIn PDF document text
    • https://wuwusafofe.weebly.com/uploads/1/3/4/6/134619260/338e23c.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://uploads.strikinglycdn.com/files/4bc17623-850a-4f68-92ec-1a84587cf02d/how_to_download_a_fortnite_mod_menu.pdfIn PDF document text
    • https://s3.amazonaws.com/sabegokek/durifukejawiranelizozak.pdfIn PDF document text
    • https://s3.amazonaws.com/mivokozibu/mgsv_first_aid_manual_location.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b2fed43-3634-4caa-b59f-af22774fa8b5/syntactic_structures_in_english.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b1c27e9-3442-4364-b288-e106a2a8ed16/vendor_due_diligence_report_example.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5777ed71-fc82-4aae-8034-07c452a11527/thi_violympic_lp_1.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27edc1a6-54a6-4296-a4fb-b58324c086e8/9524465395.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ea13679-d95b-4ab0-8838-cf2803b384ae/63003354257.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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_off0000bd45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD45 5000 bytes
SHA-256: 3818562134323f21f2b3e95105ec05b2b7373ca5d72ac4f4623eb8a4f3af3c78
font_01_sfnt_off0000ce1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE1F 11924 bytes
SHA-256: 62d8143ef5d01fe318a4d0e2b80ee1d815fb83d01f1e6e1c2f2e25d34ed49bfb
font_02_sfnt_off0000f50e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF50E 16204 bytes
SHA-256: 541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501
font_03_sfnt_off00010a3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A3C 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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