Malicious PDF — malware analysis report

Static analysis result for SHA-256 065c3f6ca668d530…

MALICIOUS

PDF

72.8 KB Created: 2021-02-23 09:52:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 4ba21c3b45c4de63766e2fe04d540f71 SHA-1: 7f4d67708372ce97489232fe6d0a6a6beb9be1eb SHA-256: 065c3f6ca668d53095c4c5b09c85c15c25f8a36d308d0c2b0cffc86a1ef2096e
96 Risk Score

Malware Insights

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

The file is a PDF document that contains a lure related to a baby blanket pattern. It embeds a malicious URL, https://seumenha.ru/strik?utm_term=easy+chevron+knitted+baby+blanket, which is likely intended to lead the user to a phishing or malware download site. ClamAV detected this file as Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0, indicating a phishing and trojan payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/strik?utm_term=easy+chevron+knitted+baby+blanket PDF link annotation
    • https://cdn.sqhk.co/numokafas/iMrDOic/among_us._dev_skin_god.pdfIn PDF document text
    • https://cdn.sqhk.co/lojiwoxaz/igzgdhd/virus_symptoms_stomach.pdfIn PDF document text
    • https://cdn.sqhk.co/wedegetuso/1e8Mnu2/86366381862.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369629/normal_600ecd2653d7e.pdfIn PDF document text
    • https://cdn.sqhk.co/kipezipilojo/gjigugi/loner_quotes_albert_einstein.pdfIn PDF document text
    • https://cdn.sqhk.co/videbamez/cqhh1jj/10140930122.pdfIn PDF document text
    • https://cdn.sqhk.co/gutipefu/82iarST/70153351021.pdfIn PDF document text
    • https://cdn.sqhk.co/bipuzojafa/FhggdN5/83943101258.pdfIn PDF document text
    • https://cdn.sqhk.co/lotivadafe/hh7PjaD/97059609906.pdfIn PDF document text
    • https://cdn.sqhk.co/jiwosowo/hx5mchf/fakokumuzavegufoki.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jumedemimo/48591319520.pdfIn PDF document text
    • https://s3.amazonaws.com/muvevanepen/11590668626.pdfIn PDF document text
    • https://s3.amazonaws.com/vebenok/3729105086.pdfIn PDF document text
    • https://s3.amazonaws.com/regovadeje/afghan_jalebi_video_song_videoming.pdfIn PDF document text
    • https://s3.amazonaws.com/sinadi/muwifimurerazipexosur.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_off0000de78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE78 5348 bytes
SHA-256: 0f5af534251b70458f26b18bf5c4a7b4374b5cc308544845f283c1a8ccf514aa
font_01_sfnt_off0000f0ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0AC 11008 bytes
SHA-256: 04f5ea4fcaace342bbcfa28431f1d043c22f381c99f1a635bcdecfcdc2a7cc46