Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4731466cc96d416…

MALICIOUS

PDF

74.6 KB Created: 2021-02-10 03:31:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 17ca2bb9c4f949582ec0cf57c38e06da SHA-1: f7d7ed8fedc6f8d311e9e4bba5cf066aae25ba12 SHA-256: d4731466cc96d4161d81253460ac467a35dd3e4d95b5b12a031a537ec563b60d
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a URL that appears to be a lure for downloading a malicious file, disguised as a movie. ClamAV and ML classifiers strongly indicate maliciousness. The presence of multiple external URLs suggests a phishing or credential harvesting attempt, likely delivered as a spearphishing attachment.

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://seumenha.ru/aws?utm_term=byzantium+2013+full+movie PDF link annotation
    • https://cdn.sqhk.co/luveruzosu/Jbiglie/livibojesebos.pdfIn PDF document text
    • https://cdn.sqhk.co/saseponirifa/ejhQhdL/zonekitimuvijo.pdfIn PDF document text
    • https://cdn.sqhk.co/birugafomafo/j1XWyig/mining_inc_remastered_halloween_2020.pdfIn PDF document text
    • http://punegasu.22web.org/dokegoleparobakafomuzamu.pdfIn PDF document text
    • https://cdn.sqhk.co/duxadikoti/ghaigjh/siwopoforupanowejelebela.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393364/normal_601d69df6c3f0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373998/normal_5fd75d9578718.pdfIn PDF document text
    • https://cdn.sqhk.co/dubikewe/bVji6S7/32739716750.pdfIn PDF document text
    • https://cdn.sqhk.co/xubupigegi/jccJG8c/rimiz.pdfIn PDF document text
    • https://cdn.sqhk.co/bafuberudod/fhahcji/25000532338.pdfIn PDF document text
    • http://nobirejajatit.iblogger.org/lomixapemimazalatuzag.pdfIn PDF document text
    • https://cdn.sqhk.co/gapalagabig/U5Hhajb/hitman_3_release_date_ps4.pdfIn PDF document text
    • https://cdn.sqhk.co/kavejufa/jcQMUie/mens_save_the_planet_vans.pdfIn PDF document text
    • https://cdn.sqhk.co/lanumakefu/ggPnZvG/42377714442.pdfIn PDF document text
    • http://mx50off.pro/3679035645o4zs4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gadoxijumulop.epizy.com/western_union_money_transfer_form.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In 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_off0000e49c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE49C 5388 bytes
SHA-256: 379f5b45c59240fa58b94780fb5ba695a87e23f0e56a8f3e41df4eb7bcf6129a
font_01_sfnt_off0000f708.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF708 11360 bytes
SHA-256: cbd0490d5afccc3c88fe14ab45b51d20fe71af2b5b3bd1a4bea046d108dcc568