Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2a8b1b4774f564c…

MALICIOUS

PDF

63.8 KB Created: 2021-03-24 05:27:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 9b2445f1b549e810ede857dcc6021ddb SHA-1: 2e61a5671fd4519b79d533946506ef994bd8bada SHA-256: e2a8b1b4774f564cab1a52d4471bdd675329f91cf6c79163ae255aa5a9ecbd97
124 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, with a primary external URI pointing to a suspicious domain that appears to be part of a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The document body, though heavily obfuscated, contains text related to balancing a washing machine, suggesting a lure to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8526

Heuristics 4

  • 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 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
  • 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://gimoguvi.ru/strik?utm_term=how+to+balance+an+lg+washer PDF link annotation
    • http://mixit.info/882188154688knex.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449604/normal_5feefc08e3e07.pdfIn PDF document text
    • http://am-sound.ru/23854411188qo3rl.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453906/normal_5fe069c8b7b3d.pdfIn PDF document text
    • http://hisgohar.site/gupuduvikus1kad.pdfIn PDF document text
    • http://adminhalil.com/what_happens_if_you_lose_your_gold_passport_in_foreign_countryupmig.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376120/normal_601b7d4e5e94e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486374/normal_60089aae4e3ea.pdfIn PDF document text
    • http://tamakar.tech/neuron_activation_meme4xos1.pdfIn PDF document text
    • http://topsalon.xyz/jifugotenonakivovv1kdh.pdfIn PDF document text
    • http://onlinekartiadesi.com/hiromi_uehara_blackbird_sheet_music8vrqw.pdfIn PDF document text
    • http://babubusawase.22web.org/vawosomebajezununuviki.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/megelugik/49409053746.pdfIn PDF document text
    • https://ba789de2-c385-43ee-b32d-a34c698d1993.filesusr.com/ugd/b7082a_96af85b5e74c4b6695963bf64d5d0132.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fekaduvopigab/pinobo.pdfIn PDF document text
    • http://zogutofarori.epizy.com/artificial_sweeteners.pdfIn PDF document text
    • https://ae8c1479-5121-4009-b0ed-8259dbb1205b.filesusr.com/ugd/0aff45_5c91e05c16fc483daad81d48559bb943.pdf?index=trueIn PDF document text
    • http://gametasixomuk.epizy.com/4485168512.pdfIn PDF document text
    • http://befonixepar.rf.gd/does_lexus_hybrid_use_regular_gas.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000df62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF62 5252 bytes
SHA-256: d5ede8f29ae717dace249e5a2562e97a3281c6f65f10858036749d675d328895