Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ae0e4fd6f4619fa…

MALICIOUS

PDF

58.7 KB Created: 2020-08-21 00:04:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2d31abbfc5ec82a7be9c14cf17262694 SHA-1: 591651a39584d063facf9f642fe8ac9901ef8e39 SHA-256: 9ae0e4fd6f4619facdcc77222d703c14a42f5fde346918c1eec1b9312da00fce
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, also contains this URL and numerous other links, many hosted on Shopify, suggesting a link farm designed to obscure the malicious destination. The primary malicious URL is 'https://ttraff.com/pify?keyword=conspiracy+to+commit+robbery+sentencing+guidelines', which is likely used to redirect users to a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.
  • 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://ttraff.com/pify?keyword=conspiracy+to+commit+robbery+sentencing+guidelines
    • http://dilasalo.okgalinstitute.org/uploads/1/3/0/8/130814020/pogexamamure_zaligawuraxisev_wisomosilida_vodunimeg.pdf
    • http://files.ksl-equine.com/uploads/1/3/1/4/131455328/vomak-pubeluva.pdf
    • http://pegexowin.powwowpitch.com/uploads/1/3/2/6/132696111/05bb9ef8cc2.pdf
    • https://cdn.shopify.com/s/files/1/0431/8386/6007/files/the_brothers_grimm_cinderella.pdf
    • https://cdn.shopify.com/s/files/1/0434/5800/3096/files/58612068642.pdf
    • https://cdn.shopify.com/s/files/1/0440/1417/4358/files/72478011945.pdf
    • https://cdn.shopify.com/s/files/1/0436/3295/1446/files/bacteria_de_la_gonorrea.pdf
    • https://cdn.shopify.com/s/files/1/0431/0184/7708/files/afmc_entrance_exam_question_papers_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/46586186067.pdf
    • https://cdn.shopify.com/s/files/1/0439/5565/0718/files/luvimosapikazalozibugo.pdf
    • https://cdn.shopify.com/s/files/1/0429/4960/7590/files/40637190197.pdf
    • https://cdn.shopify.com/s/files/1/0430/6996/4439/files/fusolibogedan.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xifenawapuvesuf.pdf
    • https://cdn.shopify.com/s/files/1/0433/9440/0414/files/wajerelusiximubov.pdf
    • https://cdn.shopify.com/s/files/1/0431/4664/1570/files/87094503198.pdf
    • https://cdn.shopify.com/s/files/1/0428/7227/5103/files/33623917786.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000aa82.bin
83651a3fe123213dd32a18f0b71a5b3799848259d415612e3ed964e8b0860fb9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAA82 5540 bytes
font_01_sfnt_off0000bd37.bin
17b1d075e78e30675e47a575cb235997c5234e146a92d1e4d8bc0697da4d6402		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBD37 9588 bytes

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