Malicious PDF — malware analysis report

Static analysis result for SHA-256 bba3cf96b413e421…

MALICIOUS

PDF

66.6 KB Created: 2021-03-28 05:52:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b85c61d09eec5e01f72bf5f4ea3e01a7 SHA-1: b5c9cfde4c23e1a6aeff554dca97c454e2ee404c SHA-256: bba3cf96b413e4214252e9d164d449137c939504ae04dc5d8c47565eafd8c348
154 Risk Score

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 Weebly and sqhk.co domains, suggesting a link farm or SEO scam. The ClamAV detection and ML classifier indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and numerous external URIs are indicative of malicious activity, potentially leveraging embedded JavaScript for redirection or exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8274

Heuristics 4

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://golowaki.ru/award?keyword=po+bronson+bombardiers+pdf
    • https://melubezu.weebly.com/uploads/1/3/4/3/134311229/7614759.pdf
    • https://vajalumodo.weebly.com/uploads/1/3/4/3/134390135/4f0d4253.pdf
    • https://cdn.sqhk.co/liwewajawab/URcohfq/sijevefatezinazoludimijop.pdf
    • https://nejavedejelije.weebly.com/uploads/1/3/4/3/134336697/ce7989e262629.pdf
    • https://cdn.sqhk.co/rosisole/aifjeAj/pawiziberalavol.pdf
    • https://rebavunegiluzu.weebly.com/uploads/1/3/4/4/134497465/143618.pdf
    • https://cdn.sqhk.co/popaxutu/Yhb4hb4/hades_star_artifacts.pdf
    • https://xepekozodixati.weebly.com/uploads/1/3/5/3/135346226/kukiwodu_davowebe.pdf
    • https://cdn.sqhk.co/wovupeni/kp14cwL/99547680448.pdf
    • http://shtangelkipokupkiitd.online/zepewudexosekafumkenca.pdf
    • https://mejatuwunuzawe.weebly.com/uploads/1/3/0/7/130775850/vudalef-fagori-pokeporomiwawo.pdf
    • https://toripifisesu.weebly.com/uploads/1/3/4/3/134367164/22f1bbdbc.pdf
    • https://sefomaxezaniv.weebly.com/uploads/1/3/1/4/131483109/pozejogon.pdf
    • https://gipazekafasulal.weebly.com/uploads/1/3/4/6/134600210/mitijaj-petoruj-ponaxu.pdf
    • https://cdn.sqhk.co/zisujidixa/hddicwZ/47698846918.pdf
    • http://medway24.com/eletricidade_fisica_9_ano6elac.pdf
    • https://cdn.sqhk.co/nexetifosam/jd4OidI/nirusamazumudewek.pdf
    • http://huaweistoreukr.xyz/band_song_ringtonesdawx.pdf
    • https://sekilulijafos.weebly.com/uploads/1/3/1/4/131438177/9537993.pdf
    • https://jamolirotiwe.weebly.com/uploads/1/3/4/6/134693152/kireroxagoger.pdf
    • https://natufebopod.weebly.com/uploads/1/3/4/3/134305275/taziwemawut-budus-duzitedekamurod-bijedenabuvid.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f3d2.bin
f5c9662ce629a689722109e0fa50b3e6a1c91bcff411e52152659b15db2a186d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF3D2 5296 bytes

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