Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c3c904fe8687321…

MALICIOUS

PDF

76.4 KB Created: 2021-01-24 04:11:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 69c5a25d26fa3946183b8fce4c21034c SHA-1: fafba073d7c0c4b6198cf48ff742987e02b7d9b9 SHA-256: 5c3c904fe868732132f8761370d13df732268b11ea084be67279d16f8f088869
244 Risk Score

Malware Insights

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

The PDF document contains a significant number of embedded links, many of which point to disposable hosting services and redirectors, indicating a link farm or phishing attempt. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or distributing further malware. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of malicious redirection or content delivery.

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
  • 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.
  • 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.
  • 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://traffmen.ru/aws?utm_term=marcus+aurelius+meditations+online+pdf In PDF document text
    • https://cdn.sqhk.co/xarozowuzosa/iiSjikp/sarapenuvolerimok.pdfIn PDF document text
    • https://cdn.sqhk.co/ganidabizi/hewe6qd/speedball_paintball_near_me.pdfIn PDF document text
    • https://wegonugu.weebly.com/uploads/1/3/4/0/134040733/3952006.pdfIn PDF document text
    • https://cdn.sqhk.co/ravunovibuxi/fJhaKeH/head_ball_uefa_champions_league.pdfIn PDF document text
    • https://ladetizor.weebly.com/uploads/1/3/4/7/134731735/76814.pdfIn PDF document text
    • https://cdn.sqhk.co/zokelotosa/mUgehd9/seesaw_class_app_store.pdfIn PDF document text
    • https://kodabovoxalomas.weebly.com/uploads/1/3/5/3/135340354/sekevulun-fegexurafogob-pifapa-josafure.pdfIn PDF document text
    • https://nopubogap.weebly.com/uploads/1/3/4/6/134667077/52014989e6bf.pdfIn PDF document text
    • https://cdn.sqhk.co/xagegegozi/hdGhjif/magogor.pdfIn PDF document text
    • https://cdn.sqhk.co/jedugifaxido/u7hfhcx/bofarim.pdfIn PDF document text
    • http://vobigabifinu.22web.org/94658188410.pdfIn PDF document text
    • https://biwasigefo.weebly.com/uploads/1/3/1/3/131398444/jupamivudenes-janinifo-vajubifa.pdfIn PDF document text
    • https://wufikaxom.weebly.com/uploads/1/3/4/8/134883002/4991807.pdfIn PDF document text
    • https://kekufekogaj.weebly.com/uploads/1/3/4/7/134768560/riruk.pdfIn PDF document text
    • https://buvupoxiku.weebly.com/uploads/1/3/4/3/134329971/f2c244855b2.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/genedesowul/zekama.pdfIn PDF document text
    • http://kiwusumusi.rf.gd/diligence_activity_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/zonebon/badlapur_songs_ringtone_free.pdfIn PDF document text
    • http://tinafominur.epizy.com/four_color_whirza_guide.pdfIn PDF document text
    • http://sotexazonilot.rf.gd/livijupugajeko.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_off0000df36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF36 5188 bytes
SHA-256: e10b679b9abbff4f2dedbb7c669c28e9db8e6c8dabb1a460db7511386c004ef0
font_01_sfnt_off0000f0c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0C1 10512 bytes
SHA-256: 49f47bdd53675358a7a30b8163b3bac76ed2ffd34c6c266800bd3a8a76739141
font_02_sfnt_off00011487.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11487 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176