Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cc2dadcb20102b7…

MALICIOUS

PDF

67.7 KB Created: 2020-08-02 06:16:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7d1470587e9645da99161dbb17316ad7 SHA-1: d35402c47b13daac5548fb4d65fbc312da63086c SHA-256: 7cc2dadcb20102b7eaf99f27b296bc60fa4f6f639a249c4635e0b85e516f415c
160 Risk Score

Malware Insights

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

The PDF file contains a high number of embedded links, many pointing to Shopify domains, which is indicative of a link farm. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is used to obscure the ultimate destination. The document body, though heavily obfuscated, contains text related to 'polling bias' and a URL that appears to be part of the lure. This combination strongly suggests an advance-fee scam designed to trick users into visiting malicious infrastructure.

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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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=emerson+polling+bias
    • http://files.karlabeck.com/uploads/1/3/0/8/130813546/3a5b9855e.pdf
    • http://files.rachellynnspeaks.com/uploads/1/3/0/8/130814284/dolidirifewokaxeb.pdf
    • http://files.audacitycoffeeroasters.com/uploads/1/3/0/9/130969761/numajanuwevus_bibanuwibob_fazapebesoruku_boxagiwi.pdf
    • https://cdn.shopify.com/s/files/1/0437/6231/9518/files/kukuno.pdf
    • https://cdn.shopify.com/s/files/1/0429/7064/4631/files/36675766011.pdf
    • https://cdn.shopify.com/s/files/1/0441/4016/7320/files/luboxipowosivesi.pdf
    • https://cdn.shopify.com/s/files/1/0438/6055/7984/files/9617595540.pdf
    • https://cdn.shopify.com/s/files/1/0440/5785/4102/files/95218621906.pdf
    • https://cdn.shopify.com/s/files/1/0440/9550/4536/files/lunewofimapa.pdf
    • https://cdn.shopify.com/s/files/1/0432/6385/2712/files/lujanusutu.pdf
    • https://cdn.shopify.com/s/files/1/0437/3141/9287/files/84211794827.pdf
    • https://cdn.shopify.com/s/files/1/0435/9415/4146/files/xekoril.pdf
    • https://cdn.shopify.com/s/files/1/0430/0334/7098/files/gifoliwo.pdf
    • https://cdn.shopify.com/s/files/1/0427/5165/6102/files/54221505807.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_off0000c7f2.bin
b986d091e2e73f5f8b8216d3f3d5d5dfa616967f281b42d55fc4df8aaa5dbdf3
pdf-font-stream PDF embedded font (sfnt) at offset 0xC7F2 5236 bytes
font_01_sfnt_off0000d9a6.bin
01a6f7b31e758823698ed1fe54f9e87d53910a03b9a3fd8aa3826f5acfc0eba3
pdf-font-stream PDF embedded font (sfnt) at offset 0xD9A6 11940 bytes