Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f19705d777168d6…

MALICIOUS

PDF

79.9 KB Created: 2021-02-04 07:34:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 5dd1d7aac087aebe885b40f42ff28382 SHA-1: dacea1779bab3e4a1bfd7b93aac0a08a40697f8c SHA-256: 2f19705d777168d64456ef95c1d488a9dd349124b71830f024eac65c21d47970
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified by ML classifiers and ClamAV as malicious. The document body, though heavily obfuscated, suggests a lure related to guides or deals, consistent with phishing or malware distribution tactics. The presence of embedded URLs and the overall detection by multiple security tools indicate a high likelihood of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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://maypoin.ru/aws?utm_term=bard+guide+terraria PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4368468/normal_5fdec90e068cc.pdfIn PDF document text
    • http://study-english-02.space/234037090251sr2c.pdfIn PDF document text
    • http://alex-chekalev.com/world_war_2_timeline_ks2ywnvm.pdfIn PDF document text
    • https://wawodupalise.weebly.com/uploads/1/3/4/6/134621762/xawapigadenubigen.pdfIn PDF document text
    • http://shlifovka-pol.website/96178920304jech.pdfIn PDF document text
    • https://cdn.sqhk.co/sajixobuko/Agighps/best_laptop_deals_amazon_prime_day.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/jonora/80291677272.pdfIn PDF document text
    • https://s3.amazonaws.com/bomupi/87979439675.pdfIn PDF document text
    • https://s3.amazonaws.com/didowugorokirug/jogorunapiratilesadupa.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_off0000faf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAF8 4832 bytes
SHA-256: 4f8e7be117965ee309c5937ec4dcb8038068da3b0b7e2cb37e906d2f1683da28
font_01_sfnt_off00010b75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B75 11864 bytes
SHA-256: 371fc85ea35f95d650bcb4cb02f1dc05264ba04c47037c8c04783d2f93fa1b57

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