Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcab6f604df226b0…

MALICIOUS

PDF

41.3 KB Created: 2020-08-19 02:40:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7281cb6f50454d5488769eccdaa3143b SHA-1: 19658029af1b23558368cf568eae0971127df0d0 SHA-256: bcab6f604df226b0ad50745b551837ad2a7fa3c76176bac9057737d75014c3e2
120 Risk Score

Malware Insights

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

The PDF was identified as malicious due to its inclusion of a large number of external links, a technique often used for SEO manipulation or to redirect users to malicious content. One critical heuristic flagged a link to a known malicious redirector. The document body contains garbled text along with the primary malicious URL and several other PDF links, suggesting an attempt to disguise the malicious intent.

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.ru/pify?keyword=bhangi+song+anthya+movie
    • http://files.lusage.org/uploads/1/3/1/4/131437567/wuxafodevobavo.pdf
    • http://files.whistlingfrogresort.com/uploads/1/3/2/6/132681002/masaberilanimubaloji.pdf
    • http://shurll.com/aps3kShow
    • https://cdn.shopify.com/s/files/1/0448/6758/4162/files/durga_saptashati_lyrics_in_kannada.pdf
    • https://cdn.shopify.com/s/files/1/0429/7061/1861/files/learn_python_in_one_day_book.pdf
    • https://cdn.shopify.com/s/files/1/0430/8349/7623/files/66890528381.pdf
    • https://cdn.shopify.com/s/files/1/0430/8123/6634/files/14624371484.pdf
    • https://cdn.shopify.com/s/files/1/0428/0903/2863/files/jatapigagazupixuxiti.pdf
    • https://cdn.shopify.com/s/files/1/0432/8315/3056/files/61844097552.pdf
    • https://cdn.shopify.com/s/files/1/0427/5362/2182/files/arsenic_toxicity_and_potential_mechanisms_of_action.pdf
    • https://cdn.shopify.com/s/files/1/0433/7047/9766/files/50362528159.pdf
    • https://cdn.shopify.com/s/files/1/0435/9336/7710/files/wapuvepikobamimuliwo.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_off00006524.bin
dc37f3e0cf289c6c2b7e8bdf0fd7d6ce3aeb04f4a99f895191b06fb6b02ec80e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6524 5180 bytes
font_01_sfnt_off000076af.bin
37cd093f52a173a1276a5348273341fdbceb86f491f7e21834d8dbf60bb33112		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76AF 9992 bytes

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