Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f7f22a921803087…

MALICIOUS

PDF

67.3 KB Created: 2021-03-16 06:58:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 0b732bcc5078d9a45985da2204e11d31 SHA-1: 4acf1c4dbd48c5a18e14cca9a2cb14e93a8bf523 SHA-256: 6f7f22a921803087412cffa3dc1859d78c1a52a209b6dbd381d90db3356425bd
124 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a link farm on disposable hosting, with a high ML score and ClamAV detection as a phishing trojan. The embedded URL points to a domain that appears to be part of a phishing or malware distribution scheme. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to a malicious site, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7003

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://pelibifir.ru/strik?utm_term=how+to+use+ulta+self+tanner PDF link annotation
    • http://usmileofficial.site/how_to_make_holy_oil_from_the_bibletc5fd.pdfIn PDF document text
    • http://carluxepaint.site/34358161734r4o6m.pdfIn PDF document text
    • http://xifadezuzurap.medianewsonline.com/304726449.pdfIn PDF document text
    • http://fruits-summer.fun/lezoz3thpl.pdfIn PDF document text
    • http://fredo.run/5746288572ez1bn.pdfIn PDF document text
    • http://xemizawufogutuf.scienceontheweb.net/suzuki_sidekick_4x4_for_sale.pdfIn PDF document text
    • http://xesapuwax.mywebcommunity.org/marantz_sr5007_service_manual.pdfIn PDF document text
    • http://gugolufixa.mywebcommunity.org/88496914238.pdfIn PDF document text
    • http://dlkmvkoenv.info/38747931594gus8t.pdfIn PDF document text
    • http://ita-yog.space/zusitoredijawusabosarwrv.pdfIn PDF document text
    • http://instapodarok.site/nubufakorowrw91y.pdfIn PDF document text
    • http://picsonair.com/funny_gifts_for_brother0ojw2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://ba789de2-c385-43ee-b32d-a34c698d1993.filesusr.com/ugd/b7082a_1443325a72774743af5ef74930581dba.pdf?index=trueIn PDF document text
    • https://17a6c5a8-0587-4adf-8126-5b439e15a62f.filesusr.com/ugd/54bec1_18c1c23fc95f4c698770a6924271bb27.pdf?index=trueIn PDF document text
    • https://6e37e838-c278-4d46-baa9-25b8497af200.filesusr.com/ugd/fbcb80_d24ea0a7baec4f35900f1db6ab354e60.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/d84a59b3-d073-449e-8c51-b897f2dc6445/8337974857.pdfIn PDF document text
    • http://tafiwepamubov.atwebpages.com/saxunulivitokoxi.pdfIn PDF document text
    • https://167c8e7b-8160-49a2-a88e-f26749d647c8.filesusr.com/ugd/1ad47d_e8f1194e53e04c5a82f55d1672bd9479.pdf?index=trueIn PDF document text
    • https://f0198b83-f3fe-41b4-8315-bacd7eabb238.filesusr.com/ugd/2b3f46_f91c836cf68d459092692843659fead9.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/20d3aab7-90f4-4447-a9b3-a23e8498e9ca/how_to_make_a_mayan_pyramid_out_of_sugar_cubes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5fdd8032-04de-484c-8732-5aed8ca9c387/english_grammar_tips_and_tricks_for_bank_exams.pdfIn PDF document text
    • https://9e705916-5bde-4eb8-be9b-8b3e910fbaf8.filesusr.com/ugd/c7a620_925745bc3c3f4343928b645f9f09cc14.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a0484f1-ede5-4237-94a1-1dc19f30dec9/ganamrutha_bodhini_tamil_book_free_download.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_off0000ef98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF98 4816 bytes
SHA-256: d87e4ba36b22b885426702b8c1d9b7f2e1c1c395002e49528ece1f8a9caf61f0

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