Malicious PDF — malware analysis report

Static analysis result for SHA-256 fce826ca17b90541…

MALICIOUS

PDF

76.3 KB Created: 2021-03-06 14:55:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 4a95262722ea23d20762aae74e8f0174 SHA-1: 07f0975181ceb044cd803fd4bcbbcbf6622d84eb SHA-256: fce826ca17b905418d356197ea5dd01f24eb1831e5b236c9f3e217a9744a83af
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. It contains numerous external URIs pointing to disposable hosting and link farms, suggesting an attempt to redirect users to malicious sites. The document body, though heavily obfuscated, appears to be a lure related to 'how to wrap shoe step by step with pictures'. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6727

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://lozipotod.ru/award?keyword=how+to+wrap+shoe+step+by+step+with+pictures PDF link annotation
    • https://cdn.sqhk.co/lexelinowe/XheigcZ/break_out_meaning_phrasal_verb.pdfIn PDF document text
    • https://rawebitor.weebly.com/uploads/1/3/4/3/134337567/6534427.pdfIn PDF document text
    • http://ladukusuga.22web.org/14441441335.pdfIn PDF document text
    • https://xafusotegemuwif.weebly.com/uploads/1/3/5/3/135304795/0e783ee34e.pdfIn PDF document text
    • https://jifofavara.weebly.com/uploads/1/3/4/6/134631997/188508.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425727/normal_5fd62d397c8ef.pdfIn PDF document text
    • https://cdn.sqhk.co/xevowuto/e79ict7/cloudflare_outage_8_30.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457008/normal_5fdb0367c6c13.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475866/normal_5fd8b097c60a9.pdfIn PDF document text
    • https://cdn.sqhk.co/wojidumezu/dEagihp/addons_maker_for_minecraft_pe_premium.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459621/normal_5feb74c359da2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384039/normal_5fd2513bf09d5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425723/normal_6041f25fe6e91.pdfIn PDF document text
    • https://jojapunopumaj.weebly.com/uploads/1/3/1/4/131482926/000f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4505820/normal_60205282bbc27.pdfIn PDF document text
    • https://cdn.sqhk.co/mewivupa/jhhigfC/japanese_koden_envelope.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://14319df0-7947-4f0d-bbb3-eaa17d5eb23e.filesusr.com/ugd/c45f38_48e9f5cbcdeb402d9c79cb08dccbdd38.pdf?index=trueIn PDF document text
    • https://237a2310-9536-43ad-add1-fe73b840a51a.filesusr.com/ugd/8b319d_e9214f14464c4215a419dd638a9aa82c.pdf?index=trueIn PDF document text
    • http://xizanisud.epizy.com/lidiv.pdfIn PDF document text
    • http://vomukosupes.rf.gd/what_laws_are_illegal_in_singapore.pdfIn PDF document text
    • http://gerekuvuburase.epizy.com/71854407438.pdfIn PDF document text
    • http://potubavaziripek.epizy.com/dimogalumopibufaziwevomug.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f594.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF594 5060 bytes
SHA-256: 2e6c052ae54d16a2af65e314b7e82ee9cb4814f0f99f0014e8dd8c936cd4e835
font_01_sfnt_off000106ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106EE 11028 bytes
SHA-256: d85dbe9e1f95e22ac5442bf45dcca540fbccdaa8ad253f8eb9a2184456ac28cc

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