Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cbc73a3797d5060…

MALICIOUS

PDF

74.5 KB Created: 2020-12-24 00:35:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: ec63e6f24849be6c0ff42e59c73ff144 SHA-1: 2781a7ea365bea549e5be52e98616cb399cabea1 SHA-256: 9cbc73a3797d5060b52a2c770c54228d91a239e7be005ec59eb068bf1f8297ab
186 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 ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous external links, many hosted on disposable domains like Weebly, suggesting a link farm or redirection scheme. The embedded URLs, such as 'https://traffnew.ru/aws?utm_term=lag+compensator+design+pdf', are likely used to direct users to malicious sites. No scripts were extracted, but the PDF structure and link farm heuristics strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 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.
  • 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://traffnew.ru/aws?utm_term=lag+compensator+design+pdf PDF link annotation
    • https://tidemipevu.weebly.com/uploads/1/3/0/7/130740592/bijizizonotujuzati.pdfIn PDF document text
    • https://dudumopovidin.weebly.com/uploads/1/3/4/3/134308156/bofowiwelikibulita.pdfIn PDF document text
    • https://vatifogogunubit.weebly.com/uploads/1/3/4/7/134725392/sinogisujuwekakeva.pdfIn PDF document text
    • https://lovaxases.weebly.com/uploads/1/3/4/6/134685664/xavewelupupevesofib.pdfIn PDF document text
    • https://vozopameniv.weebly.com/uploads/1/3/4/5/134593493/18164d71e18.pdfIn PDF document text
    • https://mixorone.weebly.com/uploads/1/3/1/4/131438240/a270023171d3.pdfIn PDF document text
    • https://kofuwirobunugob.weebly.com/uploads/1/3/4/3/134318534/sewixabidobi_vovidigudi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393790/normal_5f983b9d5a76f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368740/normal_5f9157d046186.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/vebisop/25947281478.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a8e034a-59a6-4608-b578-03266de6a393/fofuxu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f39f5d64-d388-4809-852b-288c96fb68ec/best_tv_guide_for_kodi_18.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42304f29-0917-4936-9de4-36a469a26817/wagon_wheel_line_dance_step_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/muvojugejoxip/mitosis_vs_meiosis_answer_sheet.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_off0000d87e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD87E 5172 bytes
SHA-256: 2b512313bad7cc480ed49953a129f3484d0de0110bdb508821de8d8eea09cd44
font_01_sfnt_off0000e9fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9FB 10792 bytes
SHA-256: 515d337b93a66ee3da70d57d3e0af8bb8d1f42df7f5772c5f30e20c158e0fda6
font_02_sfnt_off00010ee1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EE1 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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