Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f5143046b57df6a…

MALICIOUS

PDF

65.6 KB Created: 2021-01-16 02:12:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 0ccf3b6690e2c44396b7f6690f36bc9c SHA-1: 9ebf34e723cd0b384120a2331a7c2e83828c38ba SHA-256: 6f5143046b57df6a9024e384abc98a3132164f826c2aff35173f4c34ed1cd301
154 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://gettraff.ru/aws?utm_term=cv+voorbeeld+gratis+en In PDF document text
    • https://site-1237262.mozfiles.com/files/1237262/60271047990.pdfIn PDF document text
    • https://cdn.sqhk.co/rogapakaler/gcgftAQ/vabuledapij.pdfIn PDF document text
    • https://cdn.sqhk.co/vixukose/ifhgV5B/pesky_chicken_boss_mode.pdfIn PDF document text
    • https://cdn.sqhk.co/bepotedaxus/aiehehc/funny_clip_tik_tok_video.pdfIn PDF document text
    • https://cdn.sqhk.co/koditisalupe/8BX9dzX/word_connect_answers_level_1517.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384835/normal_5fe8b8b9b4346.pdfIn PDF document text
    • https://site-1173168.mozfiles.com/files/1173168/domusologimebo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393022/normal_5ff12baf15b62.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465255/normal_5fb57372ba70b.pdfIn PDF document text
    • https://site-1180237.mozfiles.com/files/1180237/ninifofosulozela.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380379/normal_5fa2963372df2.pdfIn PDF document text
    • https://cdn.sqhk.co/jigavozef/gGMBggA/fozisudulunusome.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/xalexojaxipud/37627815896.pdfIn PDF document text
    • https://s3.amazonaws.com/tapexiw/20661810871.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_off0000c7cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7CD 5096 bytes
SHA-256: 1ea135ad00a9ff36302772ad9a117cad4126e2a8026c4507930bbf00adfa6673
font_01_sfnt_off0000d92a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD92A 9620 bytes
SHA-256: a06224e90af6e891f7ede16f327a57d0500c7480929a792694bc88e889b29b13