Malicious PDF — malware analysis report

Static analysis result for SHA-256 06a700d9b7d318e1…

MALICIOUS

PDF

48.2 KB Created: 2020-07-30 15:30:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 458f4113ffff30eb54ba05a4832fe963 SHA-1: b29379204cdaced910f84e9decdbebb92de03a68 SHA-256: 06a700d9b7d318e1d7f75bc6297a39cb79d0e2d4333d91e8ebc2ea63d52d12f2
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm or SEO manipulation tactic. One critical heuristic identified a link to known malicious redirector infrastructure (ttraff.cc), indicating a phishing or malware distribution attempt. The ML classifier strongly supports the malicious verdict.

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.cc/pify?keyword=wheel+of+time+book+14+pdf
    • http://files.hcnewyork.com/uploads/1/3/2/7/132740267/4a8c602b3c9.pdf
    • http://files.littlestareducare.co.za/uploads/1/3/0/8/130873718/lebabulit.pdf
    • http://files.dewaldbotha.net/uploads/1/3/1/4/131407901/3356325.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/widizosatadusuzovasovodas.pdf
    • https://cdn.shopify.com/s/files/1/0429/2860/3295/files/41959478935.pdf
    • https://cdn.shopify.com/s/files/1/0432/2702/1480/files/zubunivizelifade.pdf
    • https://cdn.shopify.com/s/files/1/0430/0010/3071/files/zageweke.pdf
    • https://cdn.shopify.com/s/files/1/0431/7170/9092/files/9555391727.pdf
    • https://cdn.shopify.com/s/files/1/0431/8117/9048/files/xilol.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/57727452667.pdf
    • https://cdn.shopify.com/s/files/1/0431/5892/9570/files/37232440921.pdf
    • https://cdn.shopify.com/s/files/1/0439/4234/6907/files/88188347061.pdf
    • https://cdn.shopify.com/s/files/1/0432/9521/1680/files/derukavif.pdf
    • https://cdn.shopify.com/s/files/1/0429/2644/0607/files/88088521103.pdf
    • https://cdn.shopify.com/s/files/1/0431/8812/5857/files/lowagifagusarudoxera.pdf
    • https://cdn.shopify.com/s/files/1/0431/7410/1160/files/labakomiboxibafubutede.pdf
    • https://cdn.shopify.com/s/files/1/0427/8000/0423/files/69463185756.pdf
    • https://cdn.shopify.com/s/files/1/0428/0903/2863/files/rigidetadosunejimamu.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008045.bin
dc9a2326732d8001e540e5de10ac142d9e286c3af3b81ad460142ba1156ce5b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8045 4836 bytes
font_01_sfnt_off000090d2.bin
9fae8c8b8daec614d976cfe6b8bd8d9e99cc8ee697a1b2f445ba6370d9be5462		 pdf-font-stream PDF embedded font (sfnt) at offset 0x90D2 10200 bytes

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