Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7cd116c5eac3fc4…

MALICIOUS

PDF

49.3 KB Created: 2020-08-21 14:51:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c5a0f206eefa12549f96bb941686ed7 SHA-1: 984e3ded76df44fd379dda66d48742c60d2d0028 SHA-256: f7cd116c5eac3fc4bff5cc9c2dbfedfffbedd2432d6ef9762465ce62d6c02ebe
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of external links, many of which point to Shopify domains hosting PDF files, suggesting a link farm or SEO poisoning tactic. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely intended to lure the user to a malicious site. The document body itself contains the same suspicious URL and several benign-looking PDF links, reinforcing the redirection attempt.

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=guided+science+readers+level+a
    • http://files.hollykherndon.com/uploads/1/3/2/6/132683228/nidekobunezum_fawewobazoxi.pdf
    • http://donawajog.centrealimentaireaylmer.org/uploads/1/3/1/4/131437252/lefolonivokiro-vizoropupu-redijimonevom-foxugexe.pdf
    • http://nakavo.vallenduuk.pl/uploads/1/3/1/0/131070382/labolilasuk.pdf
    • http://gejilubuv.fredpahlke.com/uploads/1/3/1/1/131164243/tuvimazu.pdf
    • https://cdn.shopify.com/s/files/1/0432/4609/2443/files/3791496276.pdf
    • https://cdn.shopify.com/s/files/1/0435/2222/8379/files/listado_de_alimentos_alcalinos.pdf
    • https://cdn.shopify.com/s/files/1/0431/8468/5224/files/23955159327.pdf
    • https://cdn.shopify.com/s/files/1/0430/3034/7938/files/11156796087.pdf
    • https://cdn.shopify.com/s/files/1/0431/2190/1729/files/razibogevesel.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/15900382268.pdf
    • https://cdn.shopify.com/s/files/1/0429/8375/1831/files/poxutolowukokimekidagor.pdf
    • https://cdn.shopify.com/s/files/1/0438/2860/9186/files/que_es_equidad_social.pdf
    • https://cdn.shopify.com/s/files/1/0440/0332/8150/files/soil_mechanics_lab_manual_das.pdf
    • https://cdn.shopify.com/s/files/1/0430/4555/2277/files/introduction_to_sociolinguistics_janet_holmes.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/
    • https://cdn.shopify.com/s/files/1/0438/2860/9186/files/que_es_equidad_s

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c9c.bin
169168b4be7c33d6a6961a202fa3f81305e59f9fe0f1ffabeef12685887e8a28
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C9C 5024 bytes
font_01_sfnt_off00006db8.bin
8d728901da7c96363e103661acb4ae1eb070830fcf5785939d56074c733b73a8
pdf-font-stream PDF embedded font (sfnt) at offset 0x6DB8 4396 bytes
font_02_sfnt_off00007e16.bin
be7a690611e94d4cc01e95c4a22f3428b081d8301811eab90d503e77a1232908
pdf-font-stream PDF embedded font (sfnt) at offset 0x7E16 10964 bytes
font_03_sfnt_off0000a24a.bin
96f859c7fc10f93bd22fe22fc286a33aa638738a60037dcab3461568ca3f3834
pdf-font-stream PDF embedded font (sfnt) at offset 0xA24A 16080 bytes