Malicious PDF — malware analysis report

Static analysis result for SHA-256 95d0beb9ccb36bca…

MALICIOUS

PDF

80.8 KB Created: 2020-12-27 23:27:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 441f6c5d40f265d5b936ffdeac99af2a SHA-1: c237434d8aad2d350177371ff1053df7e8c93f5d SHA-256: 95d0beb9ccb36bca619025a43337cb44bbd9f7a5b9945a49b5d25989399f719f
254 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple links to redirector infrastructure, specifically `https://traffine.ru/strik?utm_term=archero+guide+2020`, which is flagged as malicious. The document also hosts a large number of external PDF links, suggesting a link farm designed to attract traffic. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://traffine.ru/strik?utm_term=archero+guide+2020 In PDF document text
    • https://kebakiwaranug.weebly.com/uploads/1/3/4/3/134317860/piwinufelu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375194/normal_5fb784be0d536.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365536/normal_5f8c754c3f6ba.pdfIn PDF document text
    • https://sobemifukoku.weebly.com/uploads/1/3/4/8/134887972/f8b77938.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409819/normal_5fac4fc870863.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375356/normal_5fc68760a346f.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://s3.amazonaws.com/besafefaf/59906893693.pdfIn PDF document text
    • https://s3.amazonaws.com/megelugik/84918169619.pdfIn PDF document text
    • https://s3.amazonaws.com/faxaxos/video_editor_para_android_2._3.pdfIn PDF document text
    • https://s3.amazonaws.com/sitok/lancet_global_health_report_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/xilasisefi/fire_safety_director_study_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/bewibiwat/maplestory_sea_training_guide_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/bokofapig/appserv_for_windows_10_64_bit.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_off0000f25a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF25A 4740 bytes
SHA-256: a20220a2eac7a41c43bcea4153dcbeba4b2c2236fe2bcaa227e584f5139b173a
font_01_sfnt_off00010281.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10281 11104 bytes
SHA-256: 0146b9f94773ad97fb452c63b782d8e176b735ccd82e33aa3472e3944f4976e4
font_02_sfnt_off00012870.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12870 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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