Malicious PDF — malware analysis report

Static analysis result for SHA-256 011620e1b3c9faf8…

MALICIOUS

PDF

92.4 KB Created: 2021-02-15 13:41:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f795edfd066fca326cc19088edecf985 SHA-1: ce78460f044918d1a21135f16ad6e58dfd3dad12 SHA-256: 011620e1b3c9faf80db5724cc137a29c94609ee77597c687904173b3111bdfea
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest an attempt to direct the user to a malicious site, potentially as part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://crophysi.ru/strik?utm_term=p90x+legs+and+back+workout+vimeo
    • https://static.s123-cdn-static.com/uploads/4490122/normal_5fff3e8f1237a.pdf
    • https://cdn.sqhk.co/lilapanorup/4gehid8/koteravobanomuvofegok.pdf
    • https://static.s123-cdn-static.com/uploads/4450140/normal_5ff0947144ebd.pdf
    • https://cdn-cms.f-static.net/uploads/4465908/normal_5fe75d1cd38cd.pdf
    • https://cdn.sqhk.co/jazumagefo/ifNicgd/pop_music_mix_2019_clean.pdf
    • https://cdn.sqhk.co/badaxiloru/2bMtsif/27826428744.pdf
    • https://cdn-cms.f-static.net/uploads/4485943/normal_60213eff8382c.pdf
    • https://cdn.sqhk.co/miwataxanis/jjz4jaT/jujiletaxax.pdf
    • https://cdn.sqhk.co/javeduner/7RhcZJA/show_hidden_files_macos_catalina.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/fuwawibu/92143669331.pdf
    • https://s3.amazonaws.com/lixisariwulo/ansible_template_file_path.pdf
    • https://s3.amazonaws.com/savifin/namma_bijapur_rap_song.pdf
    • https://s3.amazonaws.com/fosawef/detosu.pdf
    • https://s3.amazonaws.com/zuguvoxoki/safegezasifuteku.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012955.bin
53bc7ddc074844f6dfeb02e34007396a9c6e9d8b8f4dbd40bcacc4a8717c8523		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12955 5980 bytes
font_01_sfnt_off00013db8.bin
bae9e76bd6b283beff56679310052d3cf1519ee6c94db694c4977d8f691fe29b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13DB8 11352 bytes

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