Malicious PDF — malware analysis report

Static analysis result for SHA-256 d468acf821b24205…

MALICIOUS

PDF

50.6 KB Created: 2021-03-10 01:41:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 3787fdba4708861f4120bd6eb9483d78 SHA-1: a732480aa6770f250a97406701c9da6cb833e669 SHA-256: d468acf821b2420555ceee6c6390088c6cb3b74ff193637d60ac2d19af0b0204
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of external links, many hosted on disposable domains, indicating a link farm designed to redirect users. The document body, though heavily obfuscated, suggests a lure related to "Wall street journal cancel subscription number". The presence of ClamAV detection for 'Pdf.Phishing.Trojan' and ML classification further supports a malicious intent, likely phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6782

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://kuzutuzo.ru/aws?utm_term=wall+street+journal+cancel+subscription+number PDF link annotation
    • https://junobinedutuki.weebly.com/uploads/1/3/2/7/132712306/6845164.pdfIn PDF document text
    • https://lufapaxate.weebly.com/uploads/1/3/0/9/130969762/73e63dff2eb0312.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490542/normal_603b94ba54e65.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453342/normal_60306437ab17b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423137/normal_5ff69cafc1c99.pdfIn PDF document text
    • https://kuledeju.weebly.com/uploads/1/3/0/7/130775905/zubuvonom.pdfIn PDF document text
    • https://cdn.sqhk.co/nekuripafi/fgccgZV/vakisunopof.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463810/normal_5fdd79705d9d6.pdfIn PDF document text
    • http://goodnaturak.space/64128012749xjav8.pdfIn PDF document text
    • https://cdn.sqhk.co/dekavaka/HjjWhf3/netflix_skylanders_academy_characters.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405414/normal_5ff1cac81ab65.pdfIn PDF document text
    • http://baltika-trans.ru/gisunasesirawuchex2.pdfIn PDF document text
    • http://scrlt.xyz/xopix5b9pv.pdfIn PDF document text
    • https://cdn.sqhk.co/rowofabuf/yhhgigd/6068098514.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480728/normal_5fd7be458b606.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452618/normal_6043e74909b02.pdfIn PDF document text
    • http://frontglass.xyz/10th_class_science_notes_rbse_2019nbffl.pdfIn PDF document text
    • https://cdn.sqhk.co/vipujitebiki/gibicja/super_save_propane_tank.pdfIn PDF document text
    • http://socialwave.me/loletijagexopkzhr6.pdfIn PDF document text
    • https://regezubigif.weebly.com/uploads/1/3/5/3/135320660/kejowexudivid.pdfIn PDF document text
    • http://ig-copyrightnotice.com/7426274546303doh.pdfIn PDF document text
    • http://alcozerox.com/5831234813bbszb.pdfIn PDF document text
    • https://fuxakenaz.weebly.com/uploads/1/3/4/5/134589300/2205457.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480598/normal_600bf0e99db05.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367912/normal_600a84fa174dd.pdfIn PDF document text
    • https://cdn.sqhk.co/niramojiga/7ZcvDd9/51987966365.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459914/normal_603fc6a432cd7.pdfIn PDF document text

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