Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0537296fec7aebb…

MALICIOUS

PDF

58.7 KB Created: 2020-08-12 14:27:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 53047641d10dc8cc4db3b5f9855dcdf6 SHA-1: d804b4ebfe729c0207d9dd4c15618d9ecd53b389 SHA-256: b0537296fec7aebb2fe924bbf253d41fffe2a2836d5849e0707d3f81016f2df9
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many of which point to domains associated with SEO link farms. One critical heuristic identified a link to a known malicious redirector at `https://ttraff.com/pify?keyword=roman+jakobson+functions+of+language+pdf`. The document body, though heavily obfuscated, contains this URL and other PDF links, suggesting the primary purpose is to redirect the user to malicious infrastructure.

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=roman+jakobson+functions+of+language+pdf
    • http://fikanoteb.avatamsaka.ca/uploads/1/3/1/6/131606490/jefis_vewimenuse_wixevega_lifodizova.pdf
    • http://fuminajev.royalyogablissfield.com/uploads/1/3/0/7/130776487/bezamasaniru-jejefumuko-jogizapilog-daxebemenolawub.pdf
    • http://zojoginiz.icdeerlodge.org/uploads/1/3/1/8/131872225/9e2416ed2b10acc.pdf
    • http://files.stevescustomtattoos.com/uploads/1/3/1/8/131871745/f392d08.pdf
    • http://marima.klinepoodles.com/uploads/1/3/2/6/132682883/30192e998b41.pdf
    • https://cdn.shopify.com/s/files/1/0438/2726/5693/files/kitulorirumefalateta.pdf
    • https://cdn.shopify.com/s/files/1/0429/6402/5493/files/car_engine_parts_book.pdf
    • https://cdn.shopify.com/s/files/1/0432/0077/4308/files/peranan_majlis_agama_islam_negeri.pdf
    • https://cdn.shopify.com/s/files/1/0432/3134/6856/files/cours_sur_les_neurones.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zonixalekena.pdf
    • https://cdn.shopify.com/s/files/1/0431/9353/2573/files/tafelu.pdf
    • https://cdn.shopify.com/s/files/1/0429/5258/9465/files/78565017627.pdf
    • https://cdn.shopify.com/s/files/1/0436/2380/9187/files/fijugagubiweb.pdf
    • https://cdn.shopify.com/s/files/1/0432/6539/2804/files/55014984929.pdf
    • https://cdn.shopify.com/s/files/1/0450/8601/5640/files/alchemy_rory_sutherland.pdf
    • https://cdn.shopify.com/s/files/1/0432/3724/5086/files/jajelowiwesanabipukivojos.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009967.bin
3d49b33ffb41eae74ee16c554c9f57f9f729243aaa356a744d82a5e51b2a92bc
pdf-font-stream PDF embedded font (sfnt) at offset 0x9967 5548 bytes
font_01_sfnt_off0000ac39.bin
1ac64ad224444873ca42af35629a64574a8868a9c9360494f91e217c9a1fd5a9
pdf-font-stream PDF embedded font (sfnt) at offset 0xAC39 10240 bytes
font_02_sfnt_off0000cf3c.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0xCF3C 4324 bytes