Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4867fb0277eeed0…

MALICIOUS

PDF

39.7 KB Created: 2020-08-22 11:41:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5c2777ef305e2ca29013cc0d279773ad SHA-1: d148013028765a63ffc3a8c0322f490b005bfdb1 SHA-256: c4867fb0277eeed04e73303101faf72d437fe85e2584c8f0135422c62d95c843
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. This URL is presented to the user, likely as a lure. The document also contains a PDF link farm, with numerous links to PDFs hosted on Shopify and other domains, suggesting an attempt to distribute or obscure malicious content. No scripts were extracted from this sample.

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.com/pify?keyword=invisible+inc+draco+guide
    • http://files.chantelclucier.com/uploads/1/3/0/9/130969831/vibavelovorupu.pdf
    • http://kekegu.bangkokrepublik.co/uploads/1/3/1/1/131164273/1878559.pdf
    • https://cdn.shopify.com/s/files/1/0440/8341/3142/files/canadian_citizenship_exam_questions.pdf
    • https://cdn.shopify.com/s/files/1/0437/4819/6506/files/chest_vte_prophylaxis_guidelines_2020.pdf
    • https://cdn.shopify.com/s/files/1/0428/7702/6463/files/rinuxajowekizepaxatup.pdf
    • https://cdn.shopify.com/s/files/1/0431/8127/7342/files/75498570730.pdf
    • https://cdn.shopify.com/s/files/1/0434/3005/2005/files/cancionero_para_guitarra_folklore_argentino.pdf
    • https://cdn.shopify.com/s/files/1/0437/1313/4757/files/66280716351.pdf
    • https://cdn.shopify.com/s/files/1/0440/8731/2536/files/30215400905.pdf
    • https://cdn.shopify.com/s/files/1/0430/6203/4589/files/descargar_diccionario_biblico_reina_valera_1960_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0430/7599/3764/files/99606228036.pdf
    • https://cdn.shopify.com/s/files/1/0435/2642/2687/files/77872189747.pdf
    • https://cdn.shopify.com/s/files/1/0431/9212/3560/files/62820292286.pdf
    • https://cdn.shopify.com/s/files/1/0428/5802/1027/files/gobanuseti.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_off00005d74.bin
5d9a59f6435dd1b7a3eb82426fdd291c15a3d3e2cbaaf030dd87722a6d2c558d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D74 5244 bytes
font_01_sfnt_off00006f48.bin
9dc1b7f808c1455213fa62a4c060259757d026dc6062edd0eeed7ea51023a387		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F48 10192 bytes

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