Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f2b87eaf5b8fb71…

MALICIOUS

PDF

67.3 KB Created: 2020-12-09 21:15:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 9e91c51385ac3d3c7ccb5e5ebf0c2bd9 SHA-1: bee8663ae978bb39b0284825466708342857b929 SHA-256: 1f2b87eaf5b8fb71d8083e889f6584dd5f680dfb34d3a48997ddbe88dd1e3e48
194 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link disguised as a fishing report, which is a common lure for phishing attacks. This link redirects to known malicious infrastructure, indicating an attempt to lead the user to a malicious site or download. The ML classifier and ClamAV detection strongly support the malicious nature of this file.

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
  • 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.
  • 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/aws?utm_term=key+west+shore+fishing+report In PDF document text
    • https://cdn-cms.f-static.net/uploads/4484370/normal_5fba78527d7d1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468253/normal_5fc1f3a58021f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ad1a21f-3213-4fc9-a539-e92f5904d148/pledged_the_secret_life_of_sororities.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a26465a-2d88-413b-9ce6-78ad42593e80/60635348976.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75365f5f-1e79-487d-b775-327077209eda/7973075134.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb5cfdef-7075-4003-9543-e3d409ffeb6b/76259142233.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b821ec8-f011-4ab1-a16d-8c630a171e01/45410712695.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa3e4344-1a4a-4ccd-abc8-51e85f41aabc/sulfur_dichloride_lewis_dot_structure.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e199b6d9-7387-459d-bf98-e2613acb8d07/lulijazapuxadozajelap.pdfIn PDF document text
    • https://s3.amazonaws.com/zalisujezajaje/27991347694.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9404bc71-7242-4299-9966-e117c9014477/21213144117.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af47e5a3-f415-4aa2-8c45-4360c30cafe7/oh_my_girl_arin_instagram.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8ebc6af-b209-41b2-88ef-5b02973563cb/lafabodepofaxejad.pdfIn PDF document text
    • https://s3.amazonaws.com/lokijuronig/bioremediation_of_heavy_metals_using_microorganisms.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cc0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC0B 5084 bytes
SHA-256: 88981d943591ac7d7ed369a40b09fa08d83d14de12b4a20cc76fdbd55f0c57d7
font_01_sfnt_off0000dd79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD79 10252 bytes
SHA-256: e4c9f3fc075888964b7b8232d5508121ce3099d4511f92931c3bca8d4d7d74e8

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