Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bcbcf61b6322f3a…

MALICIOUS

PDF

42.7 KB Created: 2020-08-06 15:14:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5390b16e72508830bd10ecc196afbaff SHA-1: 980e168a0bfa74003b964000affcd5a460084fa8 SHA-256: 9bcbcf61b6322f3a97ae694d4e35df240c216ce1e0b814accc42a7006982314d
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.com'. The document body and embedded links suggest an SEO poisoning attempt, using a medical term to attract victims. The primary malicious URL is 'https://ttraff.com/pify?keyword=evento+vascular+cerebral+hemorragico+pdf'.

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=evento+vascular+cerebral+hemorragico+pdf
    • http://files.ijumpsportsmedia.com/uploads/1/3/0/7/130740221/7999568.pdf
    • http://files.gusu2cure.org/uploads/1/3/1/4/131453387/bdc808697.pdf
    • http://files.smlwa.org/uploads/1/3/0/8/130814189/fa961b46924f3.pdf
    • http://files.pandora-pilgrim.com/uploads/1/3/0/7/130738790/gudirosolu.pdf
    • http://files.littlebluebowphotography.com/uploads/1/3/0/7/130738720/9436b1c86093213.pdf
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/xufulubavu.pdf
    • https://cdn.shopify.com/s/files/1/0431/7442/8829/files/ratozuvorujimibewesejava.pdf
    • https://cdn.shopify.com/s/files/1/0437/8640/4000/files/pathophysiology_of_heart_disease_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0440/6660/3158/files/morosupuxogopaxekijav.pdf
    • https://cdn.shopify.com/s/files/1/0434/0360/8214/files/85906525187.pdf
    • https://cdn.shopify.com/s/files/1/0430/4447/0945/files/99527299471.pdf
    • https://cdn.shopify.com/s/files/1/0441/4645/8776/files/the_biology_of_belief_book_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/0587/8167/files/18094608385.pdf
    • https://cdn.shopify.com/s/files/1/0437/5085/0709/files/14822503812.pdf
    • https://cdn.shopify.com/s/files/1/0431/5794/6519/files/gojukadulefefivofupefopu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/magobusiriwolozun.pdf
    • https://cdn.shopify.com/s/files/1/0428/3754/1031/files/69142841408.pdf
    • https://cdn.shopify.com/s/files/1/0435/1125/1099/files/vuruxakovorikiza.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_off000066fe.bin
8ec447352d59b5e8bc6f0f3b74852114d4d66caa4c75f7160995a1371760bdf3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66FE 5724 bytes
font_01_sfnt_off00007a53.bin
14850ba6a1ef435257eba7c58b59c1b31dab8f9c0a38d15b99642ed6226f62a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A53 10352 bytes

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