Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dd4ccab6777567c…

MALICIOUS

PDF

81.4 KB Created: 2020-12-27 19:55:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: b34028e6eb7d143dbaf2c8bd18ad33f3 SHA-1: b1d4e46a0b180e3385665592d8307d3e2421bc49 SHA-256: 3dd4ccab6777567ca176bc2bb53effae4c3500eaebbdd94d1378b212ef8a2263
186 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or SEO manipulation tactic. One of the embedded URLs is https://trafffi.ru/aws?utm_term=wows+captain+skills+guide, which likely serves as a gateway to further malicious content or phishing pages. No scripts were extracted, but the PDF structure itself is indicative of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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://trafffi.ru/aws?utm_term=wows+captain+skills+guide PDF link annotation
    • https://namunobuwuper.weebly.com/uploads/1/3/0/7/130776476/fazefozuzo.pdfIn PDF document text
    • https://kevugekakizuxo.weebly.com/uploads/1/3/4/4/134481001/woligom_veragoxaxima_pisaji_rolegaj.pdfIn PDF document text
    • https://girusetobar.weebly.com/uploads/1/3/1/0/131071114/kukiget_demofepumageji_kumasokavofer.pdfIn PDF document text
    • https://cdn.sqhk.co/wotutovebo/heA5Hid/famous_english_songs_with_lyrics_mp3_download.pdfIn PDF document text
    • https://bosagibanili.weebly.com/uploads/1/3/2/6/132682134/tuvokojikigagejuzuto.pdfIn PDF document text
    • https://vodexekuteb.weebly.com/uploads/1/3/0/7/130776001/2021312.pdfIn PDF document text
    • https://gekojufoj.weebly.com/uploads/1/3/4/4/134438070/bilejigoxipujovewadu.pdfIn PDF document text
    • https://vabepazepa.weebly.com/uploads/1/3/4/5/134596671/nefabe.pdfIn PDF document text
    • https://dajexuxeguse.weebly.com/uploads/1/3/4/8/134859846/lexosokowixeza.pdfIn PDF document text
    • https://vefesipawadupo.weebly.com/uploads/1/3/4/7/134746991/wekox_puwuxojotavape_pisusazidagi.pdfIn PDF document text
    • https://pobufulali.weebly.com/uploads/1/3/4/4/134494274/widasasemukekir-jozexorisiguv-zalipekibedos.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/dufekifaral/sample_accomplishment_report_in_spg.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_off0000ed55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED55 5196 bytes
SHA-256: ab83f847bc0adf8005dff456f4745634b87c638da08d1faa3690ed67c4fba925
font_01_sfnt_off0000ff2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF2D 14108 bytes
SHA-256: 8017e0f312b61a0f8985963774f3049b42ef581e428223cd50357aa340384a32
font_02_sfnt_off00012b13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B13 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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