Malicious PDF — malware analysis report

Static analysis result for SHA-256 4be0837a65df1466…

MALICIOUS

PDF

77.3 KB Created: 2021-05-23 23:34:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: acc2201f47438baca2533534eea83866 SHA-1: 23e3f9fb015bf02152c6c39890f5e60c8459df51 SHA-256: 4be0837a65df14664676c5e60b8fcb507c351c261a072c27298c21b5b9fe0385
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 0.9990

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://midufefew.ru/strik?utm_term=frases+de+camioneros+para+las+mujeres PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4415331/normal_603ccb91855d2.pdfIn PDF document text
    • https://radugimexeb.weebly.com/uploads/1/3/4/8/134880062/8c473a7ee94c3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427105/normal_5ff7cb18f1863.pdfIn PDF document text
    • https://totidulabi.weebly.com/uploads/1/3/1/6/131606487/8773893.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368989/normal_600e4b9006fe2.pdfIn PDF document text
    • https://pabebubi.weebly.com/uploads/1/3/2/6/132695301/vuxulunolajo.pdfIn PDF document text
    • https://jopidebo.weebly.com/uploads/1/3/4/6/134608850/gedixode-pokaw-zedomo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454999/normal_604de326e636b.pdfIn PDF document text
    • https://poxolegap.weebly.com/uploads/1/3/1/0/131069824/wopakuwejidupup.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490129/normal_600aef3e7fed4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468296/normal_6069f2225a27c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457008/normal_5fec94a6bbc8b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489852/normal_6031842417003.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/megujobemegor/mevukerimivesesewud.pdfIn PDF document text
    • https://s3.amazonaws.com/jobavo/mepalu.pdfIn PDF document text
    • https://s3.amazonaws.com/dupula/53956053913.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f0663f46-da45-43e1-af31-2986cf81e850/casio_g-shock_ga-100-1a2_watch.pdfIn PDF document text
    • https://s3.amazonaws.com/bulolimepol/ponid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e96f7e52-1fa6-4ce2-b1d6-0faff6b761bc/58758072688.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60fa3dbe-109e-4c50-bd7b-efc7319f96dd/download_game_wormate_io_mod_apk_unlimited_money.pdfIn PDF document text
    • https://s3.amazonaws.com/teximikamukubo/crunchyroll_tv_app.pdfIn PDF document text
    • https://s3.amazonaws.com/vojapu/85856213943.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/737bcdb2-8d98-4bac-a8c6-04ec9b8b89be/university_of_miami_digital_marketing_bootcamp.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f1be8e3-7c71-4665-926d-bc67becbf5b4/70540670723.pdfIn PDF document text
    • https://s3.amazonaws.com/julexekubaj/18729357963.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_off0000f077.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF077 5248 bytes
SHA-256: 3758b07bae83d2cf97ced8ccc35ee544dc1808a41b8311b1e59e120c81b76303
font_01_sfnt_off0001023b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1023B 10928 bytes
SHA-256: cb0337b46d8b5dd3bf280ea5ff07898f35998b583e19d595afde5e4b75e7e731

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