Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc46e1450b710005…

MALICIOUS

PDF

64.3 KB Created: 2020-12-19 10:18:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: d7d562ad6ec0a1692396607fb7bbf781 SHA-1: 1ba9c0b8dc1964bddf4bdc9392a76c5cb4f334bb SHA-256: fc46e1450b710005754c69941116adc9635a0436376ce8b450e452c8fb7a20df
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'traffking.ru'. This, combined with a high ML classifier score and ClamAV detection, strongly indicates malicious intent. The embedded URL is likely used to lure the user to a malicious site.

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://traffking.ru/123?utm_term=cartoon+idea+sound+effect In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/61844fb6-1b56-41f9-b996-ee9d4d06a833/sujovewisolasovusu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/016521d1-70d3-4c8b-a405-1619ef5277b3/mutosufunupatoburiguxefu.pdfIn PDF document text
    • https://s3.amazonaws.com/zedudo/dojaw.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc14f07b8467722f1d70f1c/t/5fc617d2f3de5e49b535b92a/1606817754096/fairy_party_decorations_ideas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86581b53-b73d-4e1c-9f7c-817ae4d7f883/xejewazozikinekobaxub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c380d287-7009-4ecc-9e1e-74213ea1b845/hersheys_best_brownies.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifumofelu/xufopofozag.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e44e92c50b1a1e7784dc/t/5fc1db49145a8629dcf46b95/1606540106183/nafipija.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3d125bf-0226-4eb9-b643-1db92b37eb90/14751387743.pdfIn PDF document text
    • https://s3.amazonaws.com/fusidejebi/rafaguz.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc10aaaf9866f3fd2d521c0/t/5fc1aa9218e72e5fdb166f87/1606527636111/summer_escapes_pool_instruction_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba888a3f-e408-4a9b-9055-e6331a7077f4/fazavozuwonisekovig.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_off0000c28d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC28D 4888 bytes
SHA-256: 955b850ac446c59f116abc2fbe841297b1cab41d827661c2623c68b592768ab1
font_01_sfnt_off0000d339.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD339 9992 bytes
SHA-256: 817fadd603b1e6ff00c9fb0f637647fcb5dc9cdefd30ea22056faa46f967507d

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