Malicious PDF — malware analysis report

Static analysis result for SHA-256 455338fa0bb6dd33…

MALICIOUS

PDF

47.3 KB Created: 2020-08-14 22:06:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 972f58e3d8f3bcbf03d99001be6c884c SHA-1: e36a9f7055416613b4cb6b475bb75cd3ab68634b SHA-256: 455338fa0bb6dd33feadac48f583a56e363ccbbca94dcc5362a93d090bba2690
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.com'. This suggests a link farm or SEO poisoning tactic designed to funnel users to malicious infrastructure. The document body, though heavily obfuscated, contains the same lure text as the malicious URL, indicating a coordinated effort to deceive the user.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=sheet+metal+gauge+chart+fractions
    • http://rijofi.ipmsipswich.com/uploads/1/3/2/7/132740328/wozunegifa.pdf
    • https://cdn.shopify.com/s/files/1/0432/2181/1364/files/dikutirajizo.pdf
    • https://cdn.shopify.com/s/files/1/0434/7078/2624/files/ncic_2000_operating_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/3858/8584/files/87537906084.pdf
    • https://cdn.shopify.com/s/files/1/0430/1763/3945/files/wopasizemakapaxok.pdf
    • https://cdn.shopify.com/s/files/1/0430/8992/0154/files/trane_xb80_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/3009/3728/files/levokonozifilijaf.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/paxotaxazojulilinitulo.pdf
    • https://cdn.shopify.com/s/files/1/0431/1767/4656/files/10454234247.pdf
    • https://cdn.shopify.com/s/files/1/0432/8315/3056/files/joindre_fichier_messenger.pdf
    • https://cdn.shopify.com/s/files/1/0430/7035/7661/files/judd_et_al_plant_systematics.pdf
    • https://cdn.shopify.com/s/files/1/0431/0859/7927/files/acr_practice_guidelines_cardiac_mri.pdf
    • https://cdn.shopify.com/s/files/1/0441/1323/2024/files/nozusudoraloku.pdf
    • https://cdn.shopify.com/s/files/1/0434/5082/6919/files/regions_of_asia.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_off000079da.bin
d719fe5aa480cad39be5f626fa16788c358351d9e453ee743b04c435fa03bd55		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79DA 5396 bytes
font_01_sfnt_off00008c0d.bin
f0b74dfbdb2b3521bd8780bce3b5bc268076d5effd451e71c7ff46e6bfcad080		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C0D 10676 bytes

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