Malicious PDF — malware analysis report

Static analysis result for SHA-256 c601d802b0743106…

MALICIOUS

PDF

41.8 KB Created: 2020-08-28 12:47:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8a248001d1eee1b02acf359d086dbbb1 SHA-1: 1ccc099bdca4e94a0002cbe1539aea2bde5cd705 SHA-256: c601d802b074310688aac3ba4d1902bfd1d090142490993b19da0c3d80ed499f
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One critical heuristic firing indicates a malicious redirector link, specifically 'https://ttraff.cc/pify?keyword=ot+driver+assessment', which is likely intended to lead the user to a malicious site. The document body, though heavily obfuscated, contains the text 'Ot driver assessment' and the malicious URL, reinforcing the lure. No scripts were extracted from this sample.

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.cc/pify?keyword=ot+driver+assessment
    • http://zeliwum.marissaseancruz.com/uploads/1/3/0/9/130969352/a7a07.pdf
    • http://toxavi.mintzathletics.com/uploads/1/3/2/8/132814930/a3af5b7a5af4cfb.pdf
    • http://files.sarahannelalonde.com/uploads/1/3/2/6/132681757/f9187385.pdf
    • http://files.wioainoregon.org/uploads/1/3/1/4/131453934/4bb0209f958a5.pdf
    • http://fezezogim.cambridgesupervisiontraining.org/uploads/1/3/2/6/132681337/divef.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vixegenosevisime.pdf
    • https://cdn.shopify.com/s/files/1/0433/0808/9509/files/gaserimeseropame.pdf
    • https://cdn.shopify.com/s/files/1/0432/4697/7179/files/36271797258.pdf
    • https://cdn.shopify.com/s/files/1/0434/6567/0806/files/safe_agile_framework.pdf
    • https://cdn.shopify.com/s/files/1/0447/9025/1681/files/jlpt_n5_practice_test_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0469/0070/7490/files/calculo_infinitesimal_spivak.pdf
    • https://cdn.shopify.com/s/files/1/0432/9881/6150/files/jebekosewopujewud.pdf
    • https://cdn.shopify.com/s/files/1/0429/3161/7945/files/jipiwowi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ginowojero.pdf
    • https://cdn.shopify.com/s/files/1/0435/2429/2762/files/49265601218.pdf
    • https://cdn.shopify.com/s/files/1/0463/7599/3505/files/national_geographic_magazine_june_2017.pdf
    • https://cdn.shopify.com/s/files/1/0429/6222/3263/files/71844169993.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_off000064d3.bin
836390652e34b53872e445f415e04dc9aecec48e816f07129a8e6bdafbe6bc6e
pdf-font-stream PDF embedded font (sfnt) at offset 0x64D3 5028 bytes
font_01_sfnt_off000075dc.bin
6a35c4cd77a0c682dbd68e0265b8f6b14986a592429f17569a1a49749ebc3aa5
pdf-font-stream PDF embedded font (sfnt) at offset 0x75DC 10864 bytes