Malicious PDF — malware analysis report

Static analysis result for SHA-256 5801af5e1e69a357…

MALICIOUS

PDF

68.3 KB Created: 2020-08-18 18:38:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c2b02c593f593109e4dd0e340a204bf0 SHA-1: 887039d026e8bf50c568c49cc0b964ea7fb6cc19 SHA-256: 5801af5e1e69a3577b507c9f2231334280901d3bfc2b41ea5982eb37d2cb852a
150 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is used to obscure the final destination. The document body, though heavily obfuscated, contains the same URL, suggesting it is the primary lure. The presence of numerous other links to Shopify-hosted PDFs indicates a link farm or SEO poisoning tactic to improve search engine visibility for malicious content. No scripts were extracted from this sample.

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=surah+ar+rahman+latin+dan+arab+pdf
    • http://fofod.boutiquemystral.com/uploads/1/3/1/8/131856706/9465190.pdf
    • https://cdn.shopify.com/s/files/1/0430/8788/8535/files/90156971792.pdf
    • https://cdn.shopify.com/s/files/1/0449/5455/0440/files/rozajol.pdf
    • https://cdn.shopify.com/s/files/1/0430/5059/8562/files/bifebiwineto.pdf
    • https://cdn.shopify.com/s/files/1/0431/6148/5471/files/xisobamab.pdf
    • https://cdn.shopify.com/s/files/1/0434/3712/9895/files/88620499580.pdf
    • https://cdn.shopify.com/s/files/1/0431/1502/0448/files/wofufemowividalizatavarip.pdf
    • https://cdn.shopify.com/s/files/1/0430/2657/9610/files/the_expanse_abaddon_s_gate.pdf
    • https://cdn.shopify.com/s/files/1/0427/4959/1718/files/statistics_for_engineers_and_scientists.pdf
    • https://cdn.shopify.com/s/files/1/0432/7935/1976/files/cambridge_o_level_biology_revision_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/6742/4409/files/89660937335.pdf
    • https://cdn.shopify.com/s/files/1/0431/4074/3329/files/diccionario_kaqchikel_espaol.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off0000bc50.bin
a0730a097ae5eb5f6a4807266c438aff3a6250c8d2401c15418ba47d5a488d75		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xBC50 31192 bytes
font_00_sfnt_off00008907.bin
c006f4c33a13669275a64f7b233bbdbf840125d47b6719ac9a1464fe5c9d776f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8907 5000 bytes
font_01_sfnt_off000099c5.bin
e49f9e91272df9135a07bc45195ff12c9b593cf637bca642766114616e953c0f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x99C5 10884 bytes
font_03_sfnt_off0000f3f6.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF3F6 4324 bytes

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