Malicious PDF — malware analysis report

Static analysis result for SHA-256 3676bc460875a9b4…

MALICIOUS

PDF

43.1 KB Created: 2020-08-27 17:21:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bbb1d9fba26a7773de5d9174b6a970be SHA-1: af3adf3ada589403b3933caf4b20af369f87fec9 SHA-256: 3676bc460875a9b4f6fdc8980748e31b05eec38308b2505621d0cf152107e8f1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a high number of embedded links, many pointing to Shopify domains, and one critical link to a known malicious redirector at `https://ttraff.cc/pify?keyword=push+down+accounting+definition`. The heuristic `SE_PAYMENT_REDIRECT_LURE` indicates the document content is designed to mimic financial instructions, suggesting a business email compromise or phishing attempt. No scripts were extracted from this sample, but the link farm and redirector strongly suggest the PDF's purpose is to lead the user to a malicious site.

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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise 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=push+down+accounting+definition
    • http://files.possibleframe.com/uploads/1/3/1/0/131071312/jijonel.pdf
    • http://files.voiceensemble.org/uploads/1/3/1/3/131382470/8810042.pdf
    • http://files.friendsoflakenormanstatepark.org/uploads/1/3/0/7/130776511/jisidabivi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lasuzopaxikabade.pdf
    • https://cdn.shopify.com/s/files/1/0465/1188/2398/files/video_editor_for_pc_full_version.pdf
    • https://cdn.shopify.com/s/files/1/0435/8920/6174/files/mesigijadepijewevexufilu.pdf
    • https://cdn.shopify.com/s/files/1/0428/8207/2739/files/arithmetic_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0434/7628/7645/files/kupawuveviberuv.pdf
    • https://cdn.shopify.com/s/files/1/0431/7623/1063/files/38679564852.pdf
    • https://cdn.shopify.com/s/files/1/0429/6802/3194/files/faa_far_aim_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/0602/4090/files/gimanusafemu.pdf
    • https://cdn.shopify.com/s/files/1/0434/5351/3894/files/96131148640.pdf
    • https://cdn.shopify.com/s/files/1/0435/5319/4133/files/brave_new_world_critical_analysis.pdf
    • https://cdn.shopify.com/s/files/1/0428/3082/3583/files/25411973236.pdf
    • https://cdn.shopify.com/s/files/1/0437/5497/9477/files/66935315297.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_off00005e9d.bin
f759a17077f871328efaf847398626189636f7d9ec648069a0ae79b75cab587c
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E9D 5128 bytes
font_01_sfnt_off0000701d.bin
90399fb988b46906a98b77716ddafe663000b6c37fc594dcdab03b97fae6256e
pdf-font-stream PDF embedded font (sfnt) at offset 0x701D 9724 bytes
font_02_sfnt_off00009161.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0x9161 4324 bytes