Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e790a84c55f6c87…

MALICIOUS

PDF

43.6 KB Created: 2020-08-20 17:58:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a976ea629ee86180b867520abc19f012 SHA-1: b5b130a5ec9ecd4810e61405efbc14ccbbc3a556 SHA-256: 3e790a84c55f6c878603ed304aa3d49b3e5391f0791eacef669bfae5d4cee00e
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=cafe+society+soundtrack+free'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on cdn.shopify.com. The document body, though partially corrupted, contains the same redirector URL, suggesting the primary intent is to direct users to malicious infrastructure under the guise of providing free content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=cafe+society+soundtrack+free
    • http://files.phoenixrunners.ca/uploads/1/3/2/6/132683252/f83b32631a9f626.pdf
    • http://files.deborahkellerrihn.com/uploads/1/3/1/3/131379236/zufalud.pdf
    • http://files.mindfulmoves.net/uploads/1/3/1/8/131856907/59ca90e4374e80f.pdf
    • http://files.drfaridyounos.com/uploads/1/3/0/7/130739598/saxesiwumo_xuleturikofafa_gurudam_ronefozitumu.pdf
    • https://cdn.shopify.com/s/files/1/0433/7985/1414/files/dikaxiwafejenatimupudur.pdf
    • https://cdn.shopify.com/s/files/1/0428/7938/5766/files/99_names_of_allah_with_meaning_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0431/3019/2039/files/articles_in_spanish_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0433/2371/9845/files/lepalexitekufuw.pdf
    • https://cdn.shopify.com/s/files/1/0435/7311/7096/files/narasimha_kavacham_kannada.pdf
    • https://cdn.shopify.com/s/files/1/0433/2358/8773/files/96271859430.pdf
    • https://cdn.shopify.com/s/files/1/0433/7831/1326/files/maharashtra_rto_passing_no._list.pdf
    • https://cdn.shopify.com/s/files/1/0441/1644/3288/files/cds_exam_syllabus_2020.pdf
    • https://cdn.shopify.com/s/files/1/0431/1056/3994/files/kurig.pdf
    • https://cdn.shopify.com/s/files/1/0433/0445/2246/files/74640768193.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/1204107997.pdf
    • https://cdn.shopify.com/s/files/1/0440/5755/9190/files/monster_girl_encyclopedia.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_off00005feb.bin
0985a260f36f5a1f6cbe8f91579f651097475918a6253fe29bc54c980b4bb173
pdf-font-stream PDF embedded font (sfnt) at offset 0x5FEB 3872 bytes
font_01_sfnt_off00006d9f.bin
26af545a0c2328bdbefb14c3d5cc35902931251e9880e43f940044f9327dfb70
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D9F 5052 bytes
font_02_sfnt_off00007ee5.bin
658d57bb919ede3c14ff6a2474ae1b2aee466a8253fa7c6f2b49db918962b31f
pdf-font-stream PDF embedded font (sfnt) at offset 0x7EE5 9956 bytes