Malicious PDF — malware analysis report

Static analysis result for SHA-256 605327d96828faa0…

MALICIOUS

PDF

79.6 KB Created: 2021-05-24 21:46:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 0c71ddf250a0f42490ba63d14089a88b SHA-1: 5351638f14a503e20573dd43f69b5afa69ecdd57 SHA-256: 605327d96828faa007ccd5abf6123f689ac92f6178736723139ec9b232220ad3
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 0.9998

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://pelibifir.ru/strik?utm_term=ordering+fractions+from+least+to+greatest+worksheet+for+grade+2 PDF link annotation
    • https://zunuposegilidus.weebly.com/uploads/1/3/2/6/132695990/ropokivupe.pdfIn PDF document text
    • https://kowagazobavov.weebly.com/uploads/1/3/0/8/130874359/9285482.pdfIn PDF document text
    • https://vanosejifewufe.weebly.com/uploads/1/3/0/8/130814052/644944.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401716/normal_606cc85aac221.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421770/normal_603707427b8fc.pdfIn PDF document text
    • https://larulevi.weebly.com/uploads/1/3/6/0/136004384/0574b1ac56c.pdfIn PDF document text
    • https://nokajadum.weebly.com/uploads/1/3/4/8/134887388/ee02415ccb60793.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491173/normal_604a79391523d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4394060/normal_602bfd2eca0bc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374199/normal_5fe4fe081e89b.pdfIn PDF document text
    • https://wegedojilo.weebly.com/uploads/1/3/1/3/131398291/7862979.pdfIn PDF document text
    • https://fotinodonana.weebly.com/uploads/1/3/4/6/134692009/a237d219b473.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383138/normal_6039ca8b973e9.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/negonanopix/tovusafawijuvibopusef.pdfIn PDF document text
    • https://s3.amazonaws.com/mivokozibu/admin_login_template_bootstrap_4.pdfIn PDF document text
    • https://s3.amazonaws.com/gelawiweza/60462857128.pdfIn PDF document text
    • https://s3.amazonaws.com/lovomijelun/caracteristicas_del_sistema_politico_mexicano_telesecundaria.pdfIn PDF document text
    • https://s3.amazonaws.com/wurivuve/yalla_shoot_apk_english.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifawuvawot/waxasufipivusibefov.pdfIn PDF document text
    • https://s3.amazonaws.com/salosibejodod/diablo_3_switch_cheat_items.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e65b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE65B 5748 bytes
SHA-256: 6d7dbeef21b9cedc8f5161010b3f0cba29d01008bf2f6d65869fb25ba6ff0445
font_01_sfnt_off0000f9d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9D1 4540 bytes
SHA-256: 0f6dc373c794aedf5d35827414b4bca72cfe8caf00e202d44c3fdfcf5c46dd3d
font_02_sfnt_off00010aaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AAF 10984 bytes
SHA-256: bf71b53ee6e72fcac2ca8f86aa967d91e49accc4cc2bb3d84fb2892d3105ce11

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