Malicious PDF — malware analysis report

Static analysis result for SHA-256 df0dd9ffec68f830…

MALICIOUS

PDF

73.5 KB Created: 2021-01-02 13:52:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: d8759b008e0471ae765d4658e7c9efa8 SHA-1: 954e94c7887612453e08cc4489ca9947bd1d78ef SHA-256: df0dd9ffec68f830b70a535dd7d5c05fb31d608df930cd5fda4ea8b3f79c7112
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, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'trafficel.ru', which is likely used to redirect the user to a phishing or malware distribution site. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it functions as a lure, potentially leveraging embedded JavaScript for malicious actions.

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://trafficel.ru/aws?utm_term=causative+passive+form+english PDF link annotation
    • https://cdn.sqhk.co/pimidima/w1hee64/peewee_hockey_battle_drills.pdfIn PDF document text
    • https://cdn.sqhk.co/fexejikexew/jmyjhje/rorepabaxipojazi.pdfIn PDF document text
    • https://kawuloxegulul.weebly.com/uploads/1/3/4/3/134389306/85f6dd12.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464873/normal_5fc24df4654bd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419437/normal_5f9a7563ddb7f.pdfIn PDF document text
    • https://cdn.sqhk.co/tegatiwuwax/Mgjjagc/mod_master_for_minecraft_pe_apkpure.pdfIn PDF document text
    • https://tunejipurebodo.weebly.com/uploads/1/3/4/3/134342488/fe151e7.pdfIn PDF document text
    • https://bamegipizof.weebly.com/uploads/1/3/4/6/134647446/4799142.pdfIn PDF document text
    • https://munujagafunudo.weebly.com/uploads/1/3/0/8/130873736/fukizesifod-bigiti-solalufama.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/dusined/coloring_sheets_cute_animals.pdfIn PDF document text
    • https://s3.amazonaws.com/levumoduf/29051119885.pdfIn PDF document text
    • https://s3.amazonaws.com/tanapilamaxi/91774848516.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_off0000dfba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFBA 5280 bytes
SHA-256: 035635cc98125ca74b95388d331be5ae8012d0c2702bc38de4cbbd8ef4e71cb6
font_01_sfnt_off0000f189.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF189 11440 bytes
SHA-256: 568e46df66cf840ff237bf0ffb4bf4389cde383297645775c17e6d53c6c222d6