Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e52a67619010384…

MALICIOUS

PDF

95.9 KB Created: 2021-03-07 08:41:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 5f4fb46a5e61efb416692173ce8ecee5 SHA-1: 502d6ae491e0b2af0c58c6b6533efd74b5cd2f5e SHA-256: 6e52a67619010384e2f004ea4e10dab050465b79a0024ec396ffc6b847d5427b
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://dugedepap.ru/strik?utm_term=is+dunkin+donuts+hot+chocolate+good PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4393345/normal_6029ac0a3681b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4527164/normal_603a7fd3a80fd.pdfIn PDF document text
    • https://cdn.sqhk.co/kesufetumo/bmibjJz/waves_tune_live_tutorial.pdfIn PDF document text
    • http://xejopegig.mypressonline.com/jumulisikut.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490132/normal_6012a8a828b03.pdfIn PDF document text
    • https://cdn.sqhk.co/felolavap/fZy3Sdd/xunaw.pdfIn PDF document text
    • https://cdn.sqhk.co/fuvepiwedo/idicRzu/wimomulanofazepok.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422909/normal_5ff037832888c.pdfIn PDF document text
    • https://cdn.sqhk.co/lalivaga/jfhhegg/down_the_hill_delphi_murders_photos.pdfIn PDF document text
    • https://cdn.sqhk.co/xezakomujar/e6gdihJ/buvatafesuniwuninofabu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488139/normal_5fdc04942999d.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
    • http://numivonef.rf.gd/babysitter_s_black_book_full_movie.pdfIn PDF document text
    • http://jogekofasi.rf.gd/tetolumibo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/334cc4f1-7e2f-4edb-b522-51837fed5877/42048275947.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5cdd90f9-d117-41e7-9387-a10e9093c936/lapazawaluzawamanegefuga.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa818d3d-4b72-4d46-92ca-13597e7a3003/43450087860.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/663b78df-4416-405f-b3c0-264e1f0f3c30/gerutasiwiwav.pdfIn PDF document text
    • http://wegamaluperetuj.atwebpages.com/kizejufalabirofepovetiv.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012d38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D38 4988 bytes
SHA-256: 31e00616fe04075269e107ea86b3c02a96ccc1bc5a91f3fcb9a43d25c477e462
font_01_sfnt_off00013e24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E24 11200 bytes
SHA-256: 1933708c3561cf876b9b76dcb231fcc2e02530088d501aac33595cd82fa37000
font_02_sfnt_off00016433.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16433 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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