Malicious PDF — malware analysis report

Static analysis result for SHA-256 c36f0d87fb578dc5…

MALICIOUS

PDF

42.9 KB Created: 2020-09-01 15:06:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3b8bc076766e7912c848ee985b9ebe3c SHA-1: a6675ad5932ddd29074922b78a1a8f6d25619a48 SHA-256: c36f0d87fb578dc5d2887213d8c70d5f1b59d7f292aff16f46a9eb71ccabbf1e
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=top+games+2018+pc+free'. This URL is embedded within the document body, suggesting a social engineering lure to trick users into clicking it. The document also contains a large number of external PDF links, indicating a link farm, likely for SEO manipulation or to host further malicious content.

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=top+games+2018+pc+free
    • https://static.usrfiles.com/ugd/3ce946_ecd6d527616d46b1a5adaf94791ea589.pdf
    • https://static.usrfiles.com/ugd/b8c837_d5275f14275f4be9b28eedb7b2fde6de.pdf
    • https://static.usrfiles.com/ugd/b8c837_f21874f4e02c488e9fd7f7abb3329ddd.pdf
    • https://static.usrfiles.com/ugd/f967ac_0c4a6c56dfd34f359893b185f5b173e3.pdf
    • https://static.usrfiles.com/ugd/b8c837_64d4c30f99834af4941a77d1891491d8.pdf
    • https://static.usrfiles.com/ugd/3bca44_26df0b50db66429cabfc684e4682dc71.pdf
    • https://static.usrfiles.com/ugd/cc15ef_b9573815248d40af90e24060a9edbb0e.pdf
    • https://static.usrfiles.com/ugd/79cb75_3a58fe4c33f248c6914c0fe61f05a1bf.pdf
    • https://static.usrfiles.com/ugd/4b68be_435762e0f9b14c23bd97a6563fe46dc2.pdf
    • https://cdn.shopify.com/s/files/1/0439/0024/0024/files/93964442453.pdf
    • https://cdn.shopify.com/s/files/1/0438/7920/2984/files/exercice_axe_de_symtrie_cm2.pdf
    • https://cdn.shopify.com/s/files/1/0430/5652/9565/files/31392827204.pdf
    • https://cdn.shopify.com/s/files/1/0432/0369/0660/files/brochure_sample.pdf
    • https://cdn.shopify.com/s/files/1/0433/8706/0378/files/89125684315.pdf
    • https://cdn.shopify.com/s/files/1/0429/4885/3926/files/levugomuwaritub.pdf
    • https://cdn.shopify.com/s/files/1/0432/6935/7728/files/70321244305.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_off0000650d.bin
04200f820f192a24500821dd1b80f67d55bfce3c3a2dbcaed495a0769e1b412d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x650D 5772 bytes
font_01_sfnt_off000078ad.bin
2a0e75d6880172e974a9ca15da84a59e0d10ee63744053572c158d02b9a06e24		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78AD 11428 bytes

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