Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5f57cdc4d6019ce…

MALICIOUS

PDF

49.6 KB Created: 2020-08-04 01:07:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6a9e5011a245fd98ea7c113bc1913eec SHA-1: ee087cbbefc5020048d4e1daf3c38e33525a756a SHA-256: e5f57cdc4d6019ce1edb48f9f64281fd80814bbdeb14c3078a9e2491b22f7a7d
120 Risk Score

Malware Insights

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

The PDF document contains a deceptive title about merging PDF files, but embeds a link to a known malicious redirector. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms this, and the PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, many hosted on Shopify. The primary malicious URL is https://ttraff.ru/pify?keyword=comment+fusionner+deux+documents+pdf+en+un+seul+sur+mac, which is likely used to redirect the user to a further malicious destination.

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.ru/pify?keyword=comment+fusionner+deux+documents+pdf+en+un+seul+sur+mac
    • http://files.miltlauenstein.com/uploads/1/3/2/6/132695828/nubufujopalabisolir.pdf
    • http://zitipidi.lbcevansville.com/uploads/1/3/2/7/132741334/vidol.pdf
    • http://files.pippaspilatesstretch.com/uploads/1/3/2/8/132814241/rebiwogafamujoba.pdf
    • https://cdn.shopify.com/s/files/1/0432/1030/9787/files/32836238357.pdf
    • https://cdn.shopify.com/s/files/1/0435/8687/9647/files/gixuruj.pdf
    • https://cdn.shopify.com/s/files/1/0432/5136/8104/files/gokixusesapezimariwula.pdf
    • https://cdn.shopify.com/s/files/1/0438/9906/0392/files/kugevabarodakup.pdf
    • https://cdn.shopify.com/s/files/1/0432/3619/6507/files/xolufanavirujanopa.pdf
    • https://cdn.shopify.com/s/files/1/0431/5879/8492/files/alice_miller_dramat_udanego_dziecka_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0430/1576/6177/files/79117452650.pdf
    • https://cdn.shopify.com/s/files/1/0434/5089/2440/files/33529735475.pdf
    • https://cdn.shopify.com/s/files/1/0430/6855/5415/files/63896580312.pdf
    • https://cdn.shopify.com/s/files/1/0429/6065/0393/files/brutal_black_dragon_guide.pdf
    • https://cdn.shopify.com/s/files/1/0437/6133/6471/files/71344708596.pdf
    • https://cdn.shopify.com/s/files/1/0428/5235/2159/files/loxugokotulifal.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005b55.bin
d841e6ee9fc5f8d88f1d94419f2a0f587508a927e8deb92e2b18ca34c352e48a
pdf-font-stream PDF embedded font (sfnt) at offset 0x5B55 6168 bytes
font_01_sfnt_off00006af4.bin
ec6470bbd02d6d90d7351d27b33480a336c58dd7fdcd61509f40cbbb8f85f228
pdf-font-stream PDF embedded font (sfnt) at offset 0x6AF4 5272 bytes
font_02_sfnt_off00007cd1.bin
8d9f0f83b42f3f142b6e809072deb73b3946630f7827c97b1826f9a265976253
pdf-font-stream PDF embedded font (sfnt) at offset 0x7CD1 11532 bytes
font_03_sfnt_off0000a172.bin
f0898dad4ca575ee7ec65d37881b711376a04131121ff607c532cb07eb4dc320
pdf-font-stream PDF embedded font (sfnt) at offset 0xA172 16104 bytes