Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bd56413585f7ca3…

MALICIOUS

PDF

73.9 KB Created: 2020-12-25 06:04:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: f7dd66865cb06584d25106b9d5e5068c SHA-1: 3d93004470749e56e1c6fd7f7430447fbf77edf4 SHA-256: 7bd56413585f7ca392f2b86074ff47a0265f891c4877fc5b949cb17a485cfb59
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a phishing or trojan threat. It contains a large number of external links, many pointing to PDF files hosted on strikinglycdn.com and weebly.com, suggesting a link farm designed to redirect users to malicious content. The primary malicious URL identified is trafffi.ru, which is likely used for further payload delivery or phishing. No scripts were extracted, but the PDF structure itself is weaponized to facilitate the attack.

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://trafffi.ru/aws?utm_term=cheat+engine+android+no+process+list PDF link annotation
    • https://kokubexajaluk.weebly.com/uploads/1/3/2/6/132681668/aad9e42e598.pdfIn PDF document text
    • https://wokesije.weebly.com/uploads/1/3/4/5/134597961/1512476.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/3797b478-bd85-441a-beea-afa135ec21f5/38185519080.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec6de5c4-bf2c-4caf-b4d9-b5f50ddb44f8/sutowatomiwutup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82627b24-60ea-4466-94e6-b21b9ec59665/pinball_pro_football_game_in_y8.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98df04eb-ad30-438f-bcf8-1579556b2f45/xeraxavu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42f5d281-baa9-4d83-afe9-f3f0d9bdd37f/zapexevomitukarageza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/235b26fb-582c-45fb-9f64-ce78832b7049/bevomoxugojadawa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62c56393-d8ad-401b-bc2f-5a5193263f2d/amazon_fire_6.pdfIn PDF document text
    • https://s3.amazonaws.com/xotomisen/shooting_games_offline_mod_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/pisedij/plural_nouns_worksheet_3rd_grade.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/243e6859-2392-4c0e-9a4c-25ad965288f8/jowode.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b36390a-1915-4539-b314-80a7871195f1/30813891443.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08f46445-9da1-4f3e-a21f-3790597e0862/hermit_crab_out_of_shell_and_buried.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c84d38ac-44c1-4e3b-ad6a-65ec8de19c1e/sia_chandelier_mp3_download_direct.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_off0000e55b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE55B 5240 bytes
SHA-256: 455da51ccae7e925c04ede842b6204f7f284eef55604265deb8121a48f22b25c
font_01_sfnt_off0000f71e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF71E 10488 bytes
SHA-256: 19267fd38bfc191604eb48f5689be83d228477d0293c04e739bed03167c3c591

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