Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ba950ae9671a52c…

MALICIOUS

PDF

77.8 KB Created: 2021-04-12 12:51:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 48a4806b4aa5bf3692fc0575330ab308 SHA-1: 17649f62f874c48a2dc3ce9aa752697535eed873 SHA-256: 8ba950ae9671a52c6319ce2845a26591d6adc9ea6dd714d7de7e20ae43b76867
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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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=how+to+connect+external+hard+drive+to+dish+hopper PDF link annotation
    • https://pofitokibifezaf.weebly.com/uploads/1/3/5/3/135394855/nasejen-kuzopufokoj.pdfIn PDF document text
    • http://tb-films.ru/jazisomadumubegikv5834.pdfIn PDF document text
    • https://cdn.sqhk.co/vutazazu/hd03jxq/65802478781.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470224/normal_5ffef84920ca9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420586/normal_6036b53f28708.pdfIn PDF document text
    • http://luminar2-download.xyz/kite_runner_audio_book_free_downloadkpjce.pdfIn PDF document text
    • https://cdn.sqhk.co/jokufemij/ijHhc6S/christmas_lights_tumblr_wallpaper.pdfIn PDF document text
    • http://photoforce.ru/gotinr75jq.pdfIn PDF document text
    • https://xokiguju.weebly.com/uploads/1/3/4/6/134679394/senomulobof_bojesebebegixi_voxovilupegika_zetutapemepibad.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368245/normal_5fdfc39080151.pdfIn PDF document text
    • http://wefufivubulal.medianewsonline.com/technical_writing.pdfIn PDF document text
    • http://xejitifuwoligaf.mypressonline.com/54170079252.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497666/normal_600a07cd3cef5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wipibefab.onlinewebshop.net/75509667037.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b77ee25-88b9-4019-babc-ab85a5f0d546/black_and_tan_piebald_dachshund_puppies_for_sale.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b531a043-11e9-4e73-bbc1-74b373488914/bad_parking_coloring_turtle.pdfIn PDF document text
    • http://solejow.myartsonline.com/48725761457.pdfIn PDF document text
    • http://vexolofifete.atwebpages.com/60833257069.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f3dc97d-2db3-43fd-a47a-3200a5232519/soraxidasi.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_off0000f2f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2F6 5340 bytes
SHA-256: 53b61407c814f7aa9d0d26c7f5007a38c3578231a1a1ff624eee029ccf736430
font_01_sfnt_off0001052f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1052F 10744 bytes
SHA-256: d5cfa1e6ef24a8ec792d86bea3bf118e8164e81c6eef573820603e6b793601bc

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