Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0057818ba58034d…

MALICIOUS

PDF

41.4 KB Created: 2020-08-24 14:54:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e8047b25b681ff1c80ce1fb147babc19 SHA-1: aebf6c6ccdece73c129f8e25f8981c0ec3da0113 SHA-256: f0057818ba58034d6d877940fae157a50ee720abe4204b4cdd3576dc22037519
222 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link to 'ttraff.com' which is associated with malicious activity. It also features a large number of external PDF links, many hosted on Shopify, suggesting a link farm for SEO manipulation or to obscure the final destination. The document body and heuristics indicate lures for MFA harvesting and callback phishing, suggesting a multi-stage attack. The primary malicious IOC is the ttraff.com redirector URL.

Heuristics 6

  • 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
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=student+finance+secret+answer+reset
    • http://files.snail-loves.com/uploads/1/3/1/4/131452817/2250485.pdf
    • http://files.heartofyogafalmouth.co.uk/uploads/1/3/2/6/132681576/5edfd42c64db.pdf
    • http://duluwumeb.extendedlengthsessex.com/uploads/1/3/1/4/131412181/29174e87.pdf
    • https://cdn.shopify.com/s/files/1/0434/6318/0454/files/neuro_physiotherapy_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0429/6422/2101/files/retigijuxawalolipenolovaw.pdf
    • https://cdn.shopify.com/s/files/1/0448/9897/5899/files/bengali_calendar_1424_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/6581/8789/files/17403204767.pdf
    • https://cdn.shopify.com/s/files/1/0434/2880/6807/files/15903981991.pdf
    • https://cdn.shopify.com/s/files/1/0435/9792/2461/files/cell_organelles_and_their_functions_quiz.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lonub.pdf
    • https://cdn.shopify.com/s/files/1/0432/3049/4878/files/20109349052.pdf
    • https://cdn.shopify.com/s/files/1/0433/6667/8696/files/71630395450.pdf
    • https://cdn.shopify.com/s/files/1/0429/9482/7415/files/types_of_networking_cables_and_connectors.pdf
    • https://cdn.shopify.com/s/files/1/0431/6656/4520/files/google_sheets_script_as_csv.pdf
    • https://cdn.shopify.com/s/files/1/0435/4598/5192/files/sony_message_apk_mirror.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_off000064af.bin
3985a38713620a520e3831ed79d86610d21a018ee99e2f97438e8bec716a2eda		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64AF 5176 bytes
font_01_sfnt_off00007665.bin
68bd3622f048252eebd7d06553b9094255ea4f11696ecd844562f7b556b5089a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7665 10120 bytes

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