Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d91e85d42dc7074…

MALICIOUS

PDF

72.7 KB Created: 2021-04-10 18:05:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 71cc7f757bf1e121c61f8092d24ef22d SHA-1: 0c14349b0186bb4e1413eea2c005e35f211b7556 SHA-256: 9d91e85d42dc707457e82392e2148834b9411e1709103ec79523560c71bd9b75
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

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 0.9472

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://zajinet.ru/strik?utm_term=g+shock+g+7900+fake PDF link annotation
    • https://cdn.sqhk.co/pagozixupezi/8SJJZhe/56487123829.pdfIn PDF document text
    • http://tetupamino.mywebcommunity.org/email_id_list.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367303/normal_6019ff6269eb8.pdfIn PDF document text
    • https://cdn.sqhk.co/besogevipadi/ijcjcij/strategic_management_book_for_m._com.pdfIn PDF document text
    • http://fopokigife.mywebcommunity.org/bariatric_pre_op_diet.pdfIn PDF document text
    • https://cdn.sqhk.co/xorakulenido/gnyZjeh/kezoruvodosigafi.pdfIn PDF document text
    • https://cdn.sqhk.co/kufomopinu/g7bjhVr/gobevotepaxetixuwa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366343/normal_5fe435b0d8e1c.pdfIn PDF document text
    • http://kutejovanog.getenjoyment.net/ketekivebimob.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368497/normal_603ab735b1ed5.pdfIn PDF document text
    • https://cdn.sqhk.co/vumuwilaj/iiQv3jg/xumavibe.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/wopari/e._d._i._t._h_full_form.pdfIn PDF document text
    • http://tafaredos.rf.gd/esame_celi.pdfIn PDF document text
    • http://zapusov.atwebpages.com/62088628272.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a35cf8a8-b0ea-4cfe-8ed0-e795753708b8/94748936389.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a004ec7-8258-45b0-9749-5280f5e9dc08/todiwinukuwegeko.pdfIn PDF document text
    • https://s3.amazonaws.com/verirejon/29428419848.pdfIn PDF document text
    • http://tunowik.epizy.com/27894283470.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/350fc332-20fa-4576-a9e9-73905490d109/bitatowe.pdfIn PDF document text
    • http://jaminuzifibe.onlinewebshop.net/di_pasquale_anabolic_diet.pdfIn PDF document text
    • http://nokonasaxe.epizy.com/entrepreneurship_notes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1533ab02-9170-4401-bb72-4f1338e7a939/what_is_the_meaning_of_shattered_in_urdu.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f7a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7A9 5488 bytes
SHA-256: 7d9017034a76d8b55a1d9c18dccd896fc2bf7ccabc50a41db7deab9f0972ffae

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