Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7766105719c8022…

MALICIOUS

PDF

67.6 KB Created: 2021-03-10 11:51:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 3b4b2f031c245d959c952f1687e7cd4d SHA-1: 379f246c450653f4e20a669e2c3d2a503f22df19 SHA-256: a7766105719c8022773a2359f50b8ffeaddde7e0e554fa2b7aabf1e16419e623
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6498

Heuristics 5

  • 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
  • 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://fokemale.ru/aws?utm_term=easy+way+to+crochet+a+scarf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4379035/normal_6011e72200ac0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368748/normal_5ff3e7b464693.pdfIn PDF document text
    • https://vuguzunorofina.weebly.com/uploads/1/3/4/3/134322364/tabatizuvesufepolam.pdfIn PDF document text
    • https://memabalizova.weebly.com/uploads/1/3/4/4/134490842/6471100.pdfIn PDF document text
    • https://fiwibafufo.weebly.com/uploads/1/3/0/7/130774969/kewexokutexu-fevuwusuto-lumewefavok-tuketiworeg.pdfIn PDF document text
    • http://nigavereke.mygamesonline.org/youtube_movie_maker_free_download_for_windows_7_32_bit.pdfIn PDF document text
    • http://vipadobotisituz.mygamesonline.org/fitifuvasojovuwutovi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367297/normal_5ff228d42f29f.pdfIn PDF document text
    • https://duroxogudoli.weebly.com/uploads/1/3/4/3/134318703/69486.pdfIn PDF document text
    • https://kitafawavan.weebly.com/uploads/1/3/4/7/134702073/2de919.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414156/normal_6024f2abcd222.pdfIn PDF document text
    • http://lewuzuxeluxe.22web.org/29333832306.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467036/normal_5ff22cd8ee743.pdfIn PDF document text
    • http://merizipu.rf.gd/microbiology_serial_dilution_lab_report.pdfIn PDF document text
    • https://dd7ee03d-3646-4e01-a1e1-4c0a7e2c9e57.filesusr.com/ugd/d7ba0f_225ad66dbf654118bb2b592b2c08878c.pdf?index=trueIn PDF document text
    • http://xiwozoget.atwebpages.com/jersey_mikes_menu_mikes_way.pdfIn PDF document text
    • http://fefomuk.epizy.com/41938117731.pdfIn PDF document text
    • https://36425c1f-c329-48aa-845d-1f8252cb45c8.filesusr.com/ugd/01d500_c91a1e6b529e4f37a59623a4df36c4dd.pdf?index=trueIn PDF document text
    • https://df6a9abb-74f3-47e1-b359-fe6d1019da36.filesusr.com/ugd/7921d2_d7fa5d338a6a4dd5aba0455f20480014.pdf?index=trueIn PDF document text
    • http://sagapuxoxonigig.epizy.com/nikon_dslr_camera_ebay_uk.pdfIn PDF document text
    • https://8909b315-4d59-4940-aabf-0fdaa532e0ad.filesusr.com/ugd/4542d9_8b37021678a149b18476d52ac66fcb26.pdf?index=trueIn PDF document text
    • https://e5eb5b25-b33c-43e3-82d5-57ab1bf863d8.filesusr.com/ugd/b0c717_3c037b1f25014235a1a5cc75fd56dd76.pdf?index=trueIn PDF document text

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