Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c8fbc2915b155a0…

MALICIOUS

PDF

40.2 KB Created: 2020-08-20 01:24:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8e743e60ba4d4be5361f8174c8919cd6 SHA-1: e9aa39dc7f51f10a0a3dd55229ca4c4b3737d630 SHA-256: 4c8fbc2915b155a0f425158ab18c100b3c82a466c19c1e7e63eaf734d646e5d0
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it points to malicious infrastructure. Additionally, PDF_SEO_LINK_FARM indicates a large number of external links, likely to obfuscate the malicious redirector. The primary malicious IOC is the redirector URL found in the document body and heuristics.

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=setparametervalue+subreport+crystal+report+c%2523
    • http://files.torontoacademyofacting.net/uploads/1/3/1/3/131379320/lowaz_bopufigi.pdf
    • http://vapizowir.realestatesolutions360.com/uploads/1/3/1/4/131408100/pavevirolimu.pdf
    • http://zevokapuk.tameriamartinezclay.com/uploads/1/3/2/8/132815154/tisonijazimel-tevuwaw-dusabi.pdf
    • http://files.dimitrovakataacademy.com/uploads/1/3/0/7/130775150/dizizufi.pdf
    • http://supon.dumperparts.co.uk/uploads/1/3/0/7/130776783/9288187.pdf
    • https://cdn.shopify.com/s/files/1/0433/6844/8152/files/aranyak_bibhutibhushan_bandopadhyay.pdf
    • https://cdn.shopify.com/s/files/1/0435/7573/8527/files/larun.pdf
    • https://cdn.shopify.com/s/files/1/0436/1709/1744/files/jacamo_shirt_size_guide.pdf
    • https://cdn.shopify.com/s/files/1/0434/2690/6264/files/bali_detailed_map.pdf
    • https://cdn.shopify.com/s/files/1/0431/6105/9477/files/galuvubodiledije.pdf
    • https://cdn.shopify.com/s/files/1/0435/7623/0046/files/chicken_bones_mod_1._7._10.pdf
    • https://cdn.shopify.com/s/files/1/0430/2556/3801/files/ccna_1_chapter_6_packet_tracer_answers.pdf
    • https://cdn.shopify.com/s/files/1/0435/5761/7823/files/vizosusejexorikuvara.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/646255477.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_off00005a14.bin
271334a0ce94f722d2fe823c4bd31f457804667b7e65e0fd2d93d49c8a85a672		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A14 5484 bytes
font_01_sfnt_off00006cad.bin
d453e2ceb40b8d44db71644a9718c6460a9e9b109ceebedeb85b8286b3280b8b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CAD 12132 bytes

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