Malicious PDF — malware analysis report

Static analysis result for SHA-256 742a2698eac2d140…

MALICIOUS

PDF

81.2 KB Created: 2021-01-11 07:58:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 39a7ac52a3c84775ad6488eba4a8b02c SHA-1: ce5b9d827cd04eca0b792e41056222a3aad737f2 SHA-256: 742a2698eac2d140cfe4b25c3fdccc428c74ead773e5a10150e41bd75f63cf39
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, suggesting a link farm or phishing attempt to direct users to malicious sites. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URIs point towards an attempt to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/aws?utm_term=bleach+opening+13++mp4 PDF link annotation
    • https://site-1168337.mozfiles.com/files/1168337/66328751117.pdfIn PDF document text
    • https://site-1166653.mozfiles.com/files/1166653/diamond_store_free_diamond_generator_tool_refer_code.pdfIn PDF document text
    • https://site-1168059.mozfiles.com/files/1168059/jawinapagokegajaxe.pdfIn PDF document text
    • https://site-1192097.mozfiles.com/files/1192097/lukutemuluwebuvuti.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412388/normal_5feb5e4baf4a8.pdfIn PDF document text
    • https://bonopabugo.weebly.com/uploads/1/3/4/5/134581776/7635278.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404313/normal_5fcbde6c3111f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458413/normal_5fcb6f01ab46f.pdfIn PDF document text
    • https://site-1176302.mozfiles.com/files/1176302/28035906907.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404755/normal_5fc45e2c9df95.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/sixolose/86252374393.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c113.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC113 5836 bytes
SHA-256: 6b2cda484146d07fa05b8b31ff868e598e9e2b23bdfefa532e141abe02f060d0
font_01_sfnt_off0000d53c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD53C 5132 bytes
SHA-256: 41a621ad099df636e5e09be35978783e1b475ba9d78ddcdc7ee53b11b68394c5
font_02_sfnt_off0000e681.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE681 9988 bytes
SHA-256: b737a6bb095e68cc07b481a67a7a204eba4a2ae29f4b875b0b7063a04d898a64
font_03_sfnt_off00010865.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10865 19376 bytes
SHA-256: 6fb2a2370e026cd12e2645abcca637cc6fda646d0089126a10d2c8edf3326d30
font_04_sfnt_off000127b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127B8 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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