Malicious PDF — malware analysis report

Static analysis result for SHA-256 d451e31c23221f76…

MALICIOUS

PDF

42.9 KB Created: 2020-08-18 22:40:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 938235bab9261fb97913ba2d5d75c875 SHA-1: c0c50e6952224b7574ad020a04d4c767daf8f193 SHA-256: d451e31c23221f76bbc4a324d0f640f531d28744438e0226b546eb2ce581a140
120 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to external resources. One critical heuristic firing indicates that the PDF links to known malicious redirector infrastructure, specifically 'https://ttraff.cc/pify?keyword=carbohydrates+foods+list+pdf'. Another heuristic identifies this as a PDF link farm, suggesting an attempt to manipulate search engine results or distribute malicious links. The document body, though partially corrupted, contains the URL 'https://ttraff.cc/pify?keyword=carbohydrates+foods+list+pdf' and other Shopify-hosted PDF links, reinforcing the link-farming and redirection attack pattern.

Heuristics 3

  • 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.
  • 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.cc/pify?keyword=carbohydrates+foods+list+pdf
    • http://files.plpseniors.com/uploads/1/3/1/4/131437312/tiwisopiwatopi_ledasapat_fakovivivelopeg_risuwazebeda.pdf
    • http://files.johnwbaumgartner.com/uploads/1/3/1/6/131637137/696237dcfc765ef.pdf
    • http://lodopavup.tetiana.net/uploads/1/3/2/7/132710589/2674fd0e4.pdf
    • http://files.vacavillelimos.com/uploads/1/3/1/6/131637589/3443034.pdf
    • http://files.cockerhamcommercial.com/uploads/1/3/0/7/130775633/7097420.pdf
    • https://cdn.shopify.com/s/files/1/0447/4558/8887/files/paula_isabel_allende_espaol.pdf
    • https://cdn.shopify.com/s/files/1/0454/2958/8124/files/all_young_thug_songs.pdf
    • https://cdn.shopify.com/s/files/1/0434/0980/1365/files/tuwasijebamowiris.pdf
    • https://cdn.shopify.com/s/files/1/0430/6858/8194/files/63045508489.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rexalomofovuwazeb.pdf
    • https://cdn.shopify.com/s/files/1/0441/3066/4600/files/catalyst_9200_datasheet.pdf
    • https://cdn.shopify.com/s/files/1/0446/7766/0825/files/turret_lathe_and_capstan_lathe.pdf
    • https://cdn.shopify.com/s/files/1/0431/2553/8973/files/41385586745.pdf
    • https://cdn.shopify.com/s/files/1/0433/0881/0398/files/kexogorefajukawuwi.pdf
    • https://cdn.shopify.com/s/files/1/0433/4757/4943/files/mastering_blockchain_imran_bashir_download.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_off0000689b.bin
2268168be4f415487a5c559f847c3da27bfbf8b4066eb0991c4a391868c60505
pdf-font-stream PDF embedded font (sfnt) at offset 0x689B 5276 bytes
font_01_sfnt_off00007a86.bin
de39e18da50a8c9f994d833fbb2ec9087ed7b2319539cb1cbf0883bce84a817f
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A86 10620 bytes