Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e6938f21d057cce…

MALICIOUS

PDF

40.5 KB Created: 2020-08-19 01:57:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f6339332781f9a1d4e2b605f01d01b19 SHA-1: c098c042c5ccf05cd810b52848d679328e49dcea SHA-256: 9e6938f21d057ccedd6f88216aa6015f42bf489ace0cc97fcb58a31264ff3a0c
160 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many pointing to Shopify domains, suggesting a link farm for SEO poisoning. One critical heuristic indicates a malicious redirector link to 'ttraff.cc' which is used to deliver a payload. The document also contains a heuristic for password-protected archive lures, indicating a common delivery method for malware. The presence of a malicious redirector and the link farm suggest the primary goal is to trick users into downloading further malicious content.

Heuristics 4

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=aol+imap+settings+for+android
    • http://files.connectionpub.com/uploads/1/3/0/7/130738812/6651779.pdf
    • http://files.goodshepherdbarrevt.org/uploads/1/3/2/6/132695493/gulidavitefitezi.pdf
    • http://files.euro-hanger.com/uploads/1/3/2/7/132712207/ronabuvapudeli.pdf
    • http://files.midviewfootball.com/uploads/1/3/1/1/131164152/4664465.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/varanomavumozomadeda.pdf
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/50459735083.pdf
    • https://cdn.shopify.com/s/files/1/0431/3504/1693/files/rudamuzujimib.pdf
    • https://cdn.shopify.com/s/files/1/0430/2975/8103/files/76931278212.pdf
    • https://cdn.shopify.com/s/files/1/0429/2637/5071/files/ps3_cover_template.pdf
    • https://cdn.shopify.com/s/files/1/0438/1392/9122/files/73552248869.pdf
    • https://cdn.shopify.com/s/files/1/0431/7108/6485/files/52861719989.pdf
    • https://cdn.shopify.com/s/files/1/0428/0057/8723/files/xijebonija.pdf
    • https://cdn.shopify.com/s/files/1/0428/7964/7903/files/simpsons_diversity_index.pdf
    • https://cdn.shopify.com/s/files/1/0434/7763/1126/files/29202283694.pdf
    • https://cdn.shopify.com/s/files/1/0434/3057/6285/files/vanesakekotifawaxesukilis.pdf
    • https://cdn.shopify.com/s/files/1/0430/6560/6301/files/t_shirt_design_catalog.pdf
    • https://cdn.shopify.com/s/files/1/0431/0273/2448/files/43530761198.pdf
    • https://cdn.shopify.com/s/files/1/0427/4877/2508/files/como_assentar_piso_passo_a_passo.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_off000061d5.bin
8047bdccf7f1e3a3c8e32f692c29bd4b88d9089e3f505e01bfff887f35a5de9f
pdf-font-stream PDF embedded font (sfnt) at offset 0x61D5 5348 bytes
font_01_sfnt_off000073e5.bin
8aa6db810faa34ce9e266572f3f33b8714832a7568e8ed13d634a686ad7df6bd
pdf-font-stream PDF embedded font (sfnt) at offset 0x73E5 9720 bytes