Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d618c88634cb3e0…

MALICIOUS

PDF

76.3 KB Created: 2021-02-26 07:03:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 88860ddcacb4a974779ecee51dc860fd SHA-1: 7f23e28a97b44ffc1aebc6c6ac1207d2d162cb55 SHA-256: 0d618c88634cb3e03052fcb7687bdbec662db380471d9149cca63b07ed200eab
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a large number of external links, many pointing to other PDF documents hosted on disposable or suspicious domains. This behavior is indicative of a link farm, often used for SEO manipulation or to distribute malicious payloads. ClamAV and ML classifiers also flagged this file as malicious, supporting the assessment of a phishing or trojan-like intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9225

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
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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://bologen.ru/award?keyword=louie+giglio+goliath+must+fall+session+2 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4482629/normal_600fa58028c01.pdfIn PDF document text
    • https://cdn.sqhk.co/gevolonovare/a2iaicx/bitcoin_wallet_blockchain.pdfIn PDF document text
    • https://cdn.sqhk.co/vavuvalegel/cgigfhd/the_greek_god_of_lightning.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427509/normal_60278679d4700.pdfIn PDF document text
    • https://lulegosepo.weebly.com/uploads/1/3/0/9/130969478/ninodurelimu-finipogorote.pdfIn PDF document text
    • https://digaporabanezaf.weebly.com/uploads/1/3/4/6/134689005/4223295.pdfIn PDF document text
    • https://wilulesutazi.weebly.com/uploads/1/3/3/9/133997377/kokub-ruwasoraledod-vinuraze-gurug.pdfIn PDF document text
    • https://vadewowiruku.weebly.com/uploads/1/3/1/3/131382700/800883.pdfIn PDF document text
    • https://cdn.sqhk.co/rolileduvof/iaAwih2/ordinary_cream_for_acne_and_rocessia.pdfIn PDF document text
    • https://jepololazatozuj.weebly.com/uploads/1/3/4/6/134601538/7719276.pdfIn PDF document text
    • https://mabamigetope.weebly.com/uploads/1/3/4/4/134493328/cf5ec338d44.pdfIn PDF document text
    • https://boxusopusaw.weebly.com/uploads/1/3/1/3/131398197/6201806.pdfIn PDF document text
    • https://tumumasozoborux.weebly.com/uploads/1/3/1/4/131453535/sudixe_sorokagako_deweluso.pdfIn PDF document text
    • https://tunawirivam.weebly.com/uploads/1/3/1/4/131437064/7173771.pdfIn PDF document text
    • https://nosuzodudoj.weebly.com/uploads/1/3/4/5/134588086/mujopif-bofireselaluxi-jimuxa-xugabaj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413117/normal_60102013df00c.pdfIn PDF document text
    • https://rufevefiwavanu.weebly.com/uploads/1/3/5/9/135992343/bepawas_zebisusu.pdfIn PDF document text
    • https://fugomunufu.weebly.com/uploads/1/3/4/5/134586131/jinalej.pdfIn PDF document text
    • https://jagewimaw.weebly.com/uploads/1/3/4/0/134012974/duwosolofixako.pdfIn PDF document text
    • https://cdn.sqhk.co/dajebala/bgfiiHn/58921678111.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nimetegukixiz.rf.gd/jesuitas_alicante_uniforme.pdfIn PDF document text
    • http://tabifewegijip.epizy.com/deimos_gw2_guide_fr.pdfIn PDF document text
    • http://miwofalixi.rf.gd/40261130805.pdfIn PDF document text
    • http://figigibole.rf.gd/behavioral_theory_of_personality.pdfIn 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_off0000fc6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC6D 5160 bytes
SHA-256: 5e96b9f096a5a39eb972fefafa63a1e324872d9d22d4d194c27f47ca5f2927c0
font_01_sfnt_off00010de4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DE4 10240 bytes
SHA-256: 0e8764656dc917a429f0af32bbb4c32342a8c63d18638ba3fe01928cdfae830b

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