Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a83d9f1c158051b…

MALICIOUS

PDF

93.8 KB Created: 2021-02-26 00:03:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 1ce0b55f9568bcfe6181af817994bef3 SHA-1: c58d0582e262feaa48311ed9664b4a46446fffb5 SHA-256: 1a83d9f1c158051b53f94ea7179f89c5d4ad9d59ce2b6ac46f2935bcbbba00a2
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, with a high risk score. It contains an embedded URL pointing to a suspicious domain, which is likely used to deliver a secondary payload or conduct phishing. The document body, though truncated, suggests a lure related to a medical textbook, aligning with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://baarspo.ru/strik?utm_term=harrison%2527s+principles+of+internal+medicine+pdf+reddit PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4472506/normal_6019481333dab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387035/normal_603170d6526c7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375907/normal_60002d83ebd6d.pdfIn PDF document text
    • http://lemizusurupaf.22web.org/48699981346.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421629/normal_60077be9852a0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366666/normal_5fceb466069fe.pdfIn PDF document text
    • https://cdn.sqhk.co/sebutarukaw/bhhMjic/86554054010.pdfIn PDF document text
    • https://cdn.sqhk.co/likafupat/jhdiiib/25351890112.pdfIn PDF document text
    • https://cdn.sqhk.co/kawinojos/gehc4Qn/53385154599.pdfIn PDF document text
    • http://lojapidabud.mypressonline.com/99246692928.pdfIn PDF document text
    • https://cdn.sqhk.co/ziriziwebu/ojihbos/vapimaxawijifokepo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369310/normal_5fe4f65f62cfd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412158/normal_6006657821ac5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499984/normal_5ffb9f98ade7b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450347/normal_602c909ae91d1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fezolal.rf.gd/riwoxopoxiba.pdfIn PDF document text
    • http://ralomefin.epizy.com/tejeberavizalafasoveninu.pdfIn PDF document text
    • http://wijogural.epizy.com/halloween_face_paint_template.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_off000132ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x132BA 5296 bytes
SHA-256: deb276630680855e91b88ccbee2c40bd0770dbf74be02a67d45c239054140450
font_01_sfnt_off000144ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x144AE 10776 bytes
SHA-256: a5b697be666961c7120570c8b82c6eda087beabeb5f960c887238c705ce5f30e

Open this report in the interactive analyzer, or submit your own file for analysis.