Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e7089713f9f7ccb…

MALICIOUS

PDF

67.6 KB Created: 2021-04-02 17:51:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 3858ca60110ebbd4a76b3055e86eb198 SHA-1: d4fe0446ddcc86c23b20fad008c2506e74cfb172 SHA-256: 3e7089713f9f7ccbc493707b74ef03ed6cd8eafb431a05ec1307561e2fce4045
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to disposable domains and are flagged as part of a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The presence of external URIs and the link farm heuristic suggest the primary function is to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8381

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://kuzutuzo.ru/aws?utm_term=2003+jeep+liberty+4wd+not+working PDF link annotation
    • http://womirewuzakuf.sportsontheweb.net/80689742705.pdfIn PDF document text
    • https://cdn.sqhk.co/navozaxezini/boAieU7/78669734001.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482191/normal_5fdd41d8b1b4f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385028/normal_605055ffeca03.pdfIn PDF document text
    • http://zosuwalerikare.getenjoyment.net/44778867838.pdfIn PDF document text
    • https://pudawiwut.weebly.com/uploads/1/3/5/3/135342926/dowaboputufo.pdfIn PDF document text
    • http://bimadepunepi.mypressonline.com/fisetelezusutem.pdfIn PDF document text
    • https://wurivebufe.weebly.com/uploads/1/3/0/8/130874680/9796458.pdfIn PDF document text
    • https://cdn.sqhk.co/kutajanode/eeZyzig/1779629690.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490736/normal_603450f1642f5.pdfIn PDF document text
    • https://xulomonixibeneg.weebly.com/uploads/1/3/1/4/131455416/ab4dd.pdfIn PDF document text
    • https://cdn.sqhk.co/befozaxulot/oMja2VE/facebook_local_network_access.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374840/normal_60594e36b62e2.pdfIn PDF document text
    • http://tareworig.mywebcommunity.org/child_of_god_written_in_hebrew.pdfIn PDF document text
    • http://dilawiputonu.mypressonline.com/human_resource_administrator_job_description.pdfIn PDF document text
    • http://lifolibi.sportsontheweb.net/liloliwawikaxuwov.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/4dcbb487-d50b-4d9b-9a56-7cf1d9c6911a/monopoly_rules_money_pounds.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee7326a6-dacc-49fb-971e-a656e82a2ec3/plain_english_for_lawyers_by_richard_wydick.pdfIn PDF document text
    • http://gukutimaguvuzum.onlinewebshop.net/92444193743.pdfIn PDF document text
    • http://vakizonozajaxe.onlinewebshop.net/57512976639.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_off0000ee73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE73 5644 bytes
SHA-256: 9188ae448659b2f936ee16c75e8dda5d8ee5d49bf78c769e2722677235223b4d

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