Malicious PDF — malware analysis report

Static analysis result for SHA-256 28d4d02c219637b3…

MALICIOUS

PDF

51.7 KB Created: 2020-08-06 13:05:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7d454c35c283bcc6ea63cf5fcb33d346 SHA-1: e0bd4bb3428a50b9ce78d5dcf743c25cf1d94435 SHA-256: 28d4d02c219637b3769f860156e63c34a0caa7eab0d01e212ed7113bf572c368
120 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector (ttraff.com). The document body, though heavily obfuscated, contains the same URL. This suggests a phishing or scam attempt where the user is tricked into downloading a file that leads to malicious infrastructure. The presence of many external PDF links also indicates a link farm strategy, 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=dictionary+of+analytical+psychology+pdf
    • http://files.rebeccagrayyoga.com/uploads/1/3/1/1/131163945/7681821.pdf
    • http://vavikolog.communicationculturehealth.org/uploads/1/3/0/9/130969352/8fd9211d665e.pdf
    • http://files.midnightriderbrts.org/uploads/1/3/1/4/131453494/fononetif-gokuf-wizoleja.pdf
    • http://files.cloverdalebarn.com/uploads/1/3/1/4/131484328/fobudokisijifemed.pdf
    • http://files.midnightriderbrts.org/uploads/1/3/1/4/131453494/fononetif-gokuf-w
    • https://cdn.shopify.com/s/files/1/0434/3329/6028/files/braun_multiquick_7_manual.pdf
    • https://cdn.shopify.com/s/files/1/0435/3196/0474/files/20385842882.pdf
    • https://cdn.shopify.com/s/files/1/0433/7752/4888/files/system_dynamics_3rd_edition_solution_manual.pdf
    • https://cdn.shopify.com/s/files/1/0439/7400/0798/files/91348272492.pdf
    • https://cdn.shopify.com/s/files/1/0438/6809/4629/files/xterm_color_scheme.pdf
    • https://cdn.shopify.com/s/files/1/0432/1938/6526/files/standing_broad_jump_test.pdf
    • https://cdn.shopify.com/s/files/1/0430/5174/5442/files/fofifitobiv.pdf
    • https://cdn.shopify.com/s/files/1/0431/6259/9586/files/88532125558.pdf
    • https://cdn.shopify.com/s/files/1/0435/7367/4142/files/psychology_understanding_human_behavior.pdf
    • https://cdn.shopify.com/s/files/1/0429/3692/6374/files/64486133945.pdf
    • https://cdn.shopify.com/s/files/1/0435/2301/4824/files/thai_lakorn_2016.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/45235944591.pdf
    • https://cdn.shopify.com/s/files/1/0434/0485/3402/files/mewuzowogidi.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_off00008c38.bin
be2f4d7c780071726f0896cef8ddbf6f41dab94f8a3bc411f082f49b631c7e21
pdf-font-stream PDF embedded font (sfnt) at offset 0x8C38 5516 bytes
font_01_sfnt_off00009f07.bin
d10fbe7bcf5cdfc3502b01b3a86ac2136d9ce5b8e91659c878207c4190db8b30
pdf-font-stream PDF embedded font (sfnt) at offset 0x9F07 10020 bytes