Malicious PDF — malware analysis report

Static analysis result for SHA-256 3784fb0828525124…

MALICIOUS

PDF

70.5 KB Created: 2020-08-21 02:01:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 587c9577f8d80ba6494b6e9b90af6fd3 SHA-1: bf5d28654162d6bdde45b5c408d7a8a0db93400c SHA-256: 3784fb08285251243f55d759a8812972012a53fcefe0701e28418602690fb321
248 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, disguised as a consent form. It also includes a large number of links to other PDFs hosted on Shopify, suggesting a link farm for SEO poisoning or traffic generation. The heuristics indicate lures for payment redirection, MFA harvesting, and password-protected archives, all pointing towards a phishing or credential harvesting campaign.

Heuristics 7

  • 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
  • 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
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=bjhm+consent+form
    • http://files.shipshapetipsboatbulidingandrepairs.com/uploads/1/3/0/7/130740521/mejutus.pdf
    • http://mabamuta.fanfaresandreveries.com/uploads/1/3/1/4/131438379/xefanizowapigar_ziweragikidesap_sugad_muwovim.pdf
    • http://zosav.meritfinance.net/uploads/1/3/0/9/130969204/6808d.pdf
    • http://files.myregionals.com/uploads/1/3/2/3/132302998/zogaxukejakoma.pdf
    • https://cdn.shopify.com/s/files/1/0431/6299/2795/files/gopezeko.pdf
    • https://cdn.shopify.com/s/files/1/0438/9876/5480/files/pdf_to_word_converter_program_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/5652/9557/files/pubebubevikirato.pdf
    • https://cdn.shopify.com/s/files/1/0427/8140/9436/files/86394105132.pdf
    • https://cdn.shopify.com/s/files/1/0438/1740/2530/files/213_the_hard_way.pdf
    • https://cdn.shopify.com/s/files/1/0433/0664/7707/files/addition_and_subtraction_worksheets_grade_4.pdf
    • https://cdn.shopify.com/s/files/1/0433/0032/3478/files/37773384982.pdf
    • https://cdn.shopify.com/s/files/1/0434/6249/2324/files/seboxiredoto.pdf
    • https://cdn.shopify.com/s/files/1/0431/4886/9789/files/xotuj.pdf
    • https://cdn.shopify.com/s/files/1/0430/4375/0049/files/android_storage_emulated_0_location.pdf
    • https://cdn.shopify.com/s/files/1/0428/4848/5535/files/88995100628.pdf
    • https://cdn.shopify.com/s/files/1/0430/1278/4277/files/85182127997.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_off0000d717.bin
7648f97d22cb905af3e70d7f442466ec99bc90cb9edd7626a1155df498492437		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD717 5004 bytes
font_01_sfnt_off0000e7f8.bin
2009b1587ccaafc4bd17fbb89f1174a17df2d5f771b0d9fd24509c2153ecbd38		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE7F8 11016 bytes

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