Malicious PDF — malware analysis report

Static analysis result for SHA-256 43bc24a3eaf04b94…

MALICIOUS

PDF

54.8 KB Created: 2020-09-03 01:00:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d886395828388cc046fe07749b91900a SHA-1: fea25cd2b28fedd036186d5e8d8d694f9e0b32e1 SHA-256: 43bc24a3eaf04b94fe1e217b571d27e3913c410f4fc9d2e2b0e9d41f41ecd965
160 Risk Score

Malware Insights

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

The PDF contains a lure related to payment instructions, a common Business Email Compromise tactic. It includes a critical heuristic firing for a malicious redirector link pointing to 'ttraff.club', which is likely used to deliver a second-stage payload or redirect to a phishing site. The document also features a large number of embedded links, many pointing to benign Shopify URLs, but the primary malicious link is the most concerning IOC.

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.club/wix?keyword=burger+king+app+android++apk
    • https://static.usrfiles.com/ugd/b8c837_c4dda66298124c45b7c90b0a0761bc49.pdf
    • https://static.usrfiles.com/ugd/99a8f2_fa96b08c2ab84b62a10146b5bc4e385c.pdf
    • https://static.usrfiles.com/ugd/b96e41_5cba5396702b462dac9f7d7a3dd03d64.pdf
    • https://static.usrfiles.com/ugd/ab922d_6ebd15e1befe4e208d0e9eb0036f0fd8.pdf
    • https://cdn.shopify.com/s/files/1/0431/7223/3380/files/sprout_social_vs_social_report.pdf
    • https://cdn.shopify.com/s/files/1/0431/5981/4306/files/99229220567.pdf
    • https://cdn.shopify.com/s/files/1/0436/9278/5818/files/research_report_on_performance_appraisal.pdf
    • https://cdn.shopify.com/s/files/1/0430/4722/3458/files/81968924208.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32773531818.pdf
    • https://cdn.shopify.com/s/files/1/0432/1532/3291/files/astrophil_and_stella_sonnets.pdf
    • https://cdn.shopify.com/s/files/1/0433/9934/8389/files/colored_pencil_artist_s_drawing_bible.pdf
    • https://cdn.shopify.com/s/files/1/0431/5981/4306/files/47776536896.pdf
    • https://cdn.shopify.com/s/files/1/0434/0331/3315/files/42771244081.pdf
    • https://cdn.shopify.com/s/files/1/0435/1482/2811/files/12816044358.pdf
    • https://cdn.shopify.com/s/files/1/0430/9565/4564/files/fullmetal_alchemist_manga.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000071b6.bin
1d56eee5d3b210f82479af399241942ee5beccb811e0d11374fb9bbf9b25dabe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71B6 3844 bytes
font_01_sfnt_off00007f76.bin
aa397b001932893392b0c3c1285cacef36ad3194fc9f7f2c0e09007d58c751f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F76 5032 bytes
font_02_sfnt_off000090a7.bin
2c8b288031ef0936f17776fb04cbcbb603230c08e33512233a8af53c8b79a4ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x90A7 11384 bytes
font_03_sfnt_off0000b79e.bin
149cab45689013e99d1aa520d2e5234663aa5d8577b6aae5e423b5d60aeda4c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB79E 16036 bytes

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