Malicious PDF — malware analysis report

Static analysis result for SHA-256 df07c0906f47c0e4…

MALICIOUS

PDF

47.5 KB Created: 2020-08-08 17:36:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 247f3230379dfdae8b4db34e20820cdb SHA-1: 0abe39541ba94b1d4ac469191492b4e8a92624c3 SHA-256: df07c0906f47c0e492251ab58a71f38d1104e6da176897427b858a29dcd3a3a5
170 Risk Score

Malware Insights

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

The PDF contains a link farm and a specific malicious redirector URL, disguised with invoice-related text. The primary malicious URL is https://ttraff.ru/pify?keyword=auto+repair+invoice+form+pdf, which is likely used to redirect the user to a further malicious destination. The document body and heuristics indicate a lure related to payment or invoices, a common tactic in business email compromise attacks.

Heuristics 5

  • 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
  • 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.ru/pify?keyword=auto+repair+invoice+form+pdf
    • http://files.burleybridge.com/uploads/1/3/2/8/132814250/wazodal-katom.pdf
    • http://files.flowergirlnaturals.com/uploads/1/3/0/9/130969656/7144519.pdf
    • http://files.queenofthewaves.org/uploads/1/3/0/7/130739674/gegibibibakerin_vivupi_wifel.pdf
    • http://paleb.marylandcivilairpatrol.org/uploads/1/3/2/6/132681579/79694f22d4a138.pdf
    • http://files.americanreferralconnection.com/uploads/1/3/1/4/131406736/083e967ba.pdf
    • https://cdn.shopify.com/s/files/1/0427/7311/9143/files/lerevosusawu.pdf
    • https://cdn.shopify.com/s/files/1/0430/5059/8562/files/75005081765.pdf
    • https://cdn.shopify.com/s/files/1/0428/1594/6911/files/vaxanuxexakuratotari.pdf
    • https://cdn.shopify.com/s/files/1/0433/9276/2006/files/65657467841.pdf
    • https://cdn.shopify.com/s/files/1/0433/3459/8809/files/gikudiwijav.pdf
    • https://cdn.shopify.com/s/files/1/0431/4837/8280/files/redusuwer.pdf
    • https://cdn.shopify.com/s/files/1/0440/5903/3752/files/19146089960.pdf
    • https://cdn.shopify.com/s/files/1/0435/3441/8075/files/2509080067.pdf
    • https://cdn.shopify.com/s/files/1/0440/7810/4728/files/tewowizawip.pdf
    • https://cdn.shopify.com/s/files/1/0430/4653/5322/files/judoxiloxax.pdf
    • https://cdn.shopify.com/s/files/1/0430/9788/2773/files/kagazoga.pdf
    • https://cdn.shopify.com/s/files/1/0437/1195/5098/files/jitujad.pdf
    • https://cdn.shopify.com/s/files/1/0435/6059/9701/files/incidencia_politica.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_off00007c69.bin
3eeed0db5675126da1620258bc2037d6377438561370edeab0f21c2c8cbb470d
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C69 5140 bytes
font_01_sfnt_off00008dda.bin
0065edc82c646470ce03541bb70eee4209a4c3fba255482c5db08a91d605b999
pdf-font-stream PDF embedded font (sfnt) at offset 0x8DDA 10400 bytes