Malicious PDF — malware analysis report

Static analysis result for SHA-256 374c6b57f08e12b5…

MALICIOUS

PDF

161.1 KB Created: 2021-01-14 11:59:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 5d440e55928199985e9cf426f9e7b7ce SHA-1: 211ec3e531e1e852b9a79cff9e979a500032a641 SHA-256: 374c6b57f08e12b569d7a263f8bc43de5b0e388692fea56445e1e63e994a64fc
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, trafffe.ru, which is likely part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of external URIs and the overall detection suggest the document is designed to redirect users to malicious content, potentially leading to further compromise.

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://trafffe.ru/123?utm_term=indian+economic+history+pdf PDF link annotation
    • https://cdn.sqhk.co/didatife/ajbhcwl/entrepreneurship_courses_online.pdfIn PDF document text
    • https://kivuligob.weebly.com/uploads/1/3/0/8/130874143/f891630c6b.pdfIn PDF document text
    • https://cdn.sqhk.co/bebumula/ggf9hiE/line_official_account_download_mac.pdfIn PDF document text
    • https://sipopupomiva.weebly.com/uploads/1/3/4/3/134307082/dolab.pdfIn PDF document text
    • https://rixidagetowema.weebly.com/uploads/1/3/4/6/134612143/molad.pdfIn PDF document text
    • https://kitigenuripoduj.weebly.com/uploads/1/3/1/0/131070171/dikokanuzopa-kavaj-guzezuleme.pdfIn PDF document text
    • https://majejuwusi.weebly.com/uploads/1/3/2/3/132303270/garivexejajojol_fedugisigusojo_juzenigeware_kovutow.pdfIn PDF document text
    • https://site-1178548.mozfiles.com/files/1178548/filejojadomesanivit.pdfIn PDF document text
    • https://lameperitilexi.weebly.com/uploads/1/3/1/1/131164355/digafaxi.pdfIn PDF document text
    • https://site-1177663.mozfiles.com/files/1177663/lusaniloluwomuzidugipun.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/megulu/bajrangi_bhaijaan_all_mp4_songs_free.pdfIn PDF document text
    • https://s3.amazonaws.com/dufekifaral/aectp_400.pdfIn PDF document text
    • https://s3.amazonaws.com/waxegatulo/postknight_stats_guide_reddit.pdfIn PDF document text
    • https://s3.amazonaws.com/zokokamu/waxedopot.pdfIn PDF document text
    • https://s3.amazonaws.com/minabiwa/briardale_primary_school_uniform.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/70511430220.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00022449.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x22449 5404 bytes
SHA-256: 9a3cc15f322b9cf8a2663ca42ac31b90d95b3fe8e96ac10396db5a5680979abe
font_01_sfnt_off00023686.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x23686 13044 bytes
SHA-256: 704e0e97ad2e7ca07d470f8b768443eee7f1131a55f3ab7fa88dfd8403279486
font_02_sfnt_off000261bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x261BD 16196 bytes
SHA-256: 7689da790cdc6258a6d864b7e00052937ab2c2d0be8be13ade37668352caed8a

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