Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a5c94523329857e…

MALICIOUS

PDF

43.0 KB Created: 2020-08-06 19:42:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e7b62209664ff4f7ec02e6a434a577b SHA-1: ad6e6bddfc366e3e45b3c33cc75bf4ba90f967cd SHA-256: 9a5c94523329857e1d0b1044054e243ecda2ebf9d20a26d0e541d4cf6861f24a
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many of which point to a redirector service. The primary malicious URL, https://ttraff.cc/pify?keyword=attending+skills+in+counseling+pdf, is designed to redirect users to potentially harmful content. The document body, though heavily obfuscated, contains references to the malicious URL and other PDF files, suggesting a link farm or redirection scheme.

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=attending+skills+in+counseling+pdf
    • http://files.thefulfillmenthouse.com/uploads/1/3/1/4/131438899/d69409382b6245.pdf
    • http://vepuroz.johntraegerstudio.com/uploads/1/3/0/8/130874254/ae8abc6314.pdf
    • http://files.thejaspertree.co.uk/uploads/1/3/1/6/131637806/1466423.pdf
    • https://cdn.shopify.com/s/files/1/0433/6346/7414/files/85791366554.pdf
    • https://cdn.shopify.com/s/files/1/0437/1123/4197/files/rajijagomimasurefuw.pdf
    • https://cdn.shopify.com/s/files/1/0429/8620/9439/files/vutawukesiligov.pdf
    • https://cdn.shopify.com/s/files/1/0431/5188/4445/files/autocad_tutorial_in_amharic.pdf
    • https://cdn.shopify.com/s/files/1/0434/2513/6792/files/60992760570.pdf
    • https://cdn.shopify.com/s/files/1/0437/0753/1432/files/83638692659.pdf
    • https://cdn.shopify.com/s/files/1/0428/9318/1081/files/topakuresijekabiso.pdf
    • https://cdn.shopify.com/s/files/1/0429/3292/8671/files/93209052455.pdf
    • https://cdn.shopify.com/s/files/1/0432/6470/4662/files/ferakozapitezederif.pdf
    • https://cdn.shopify.com/s/files/1/0437/6703/8109/files/the_succubus_south_park.pdf
    • https://cdn.shopify.com/s/files/1/0430/3175/6957/files/gubata.pdf
    • https://cdn.shopify.com/s/files/1/0435/4637/8404/files/47432305719.pdf
    • https://cdn.shopify.com/s/files/1/0428/4953/4111/files/lirasiximilabotakikimozir.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_off00006b13.bin
53954fa13110d15fcc647f743331bd3c7f899bd793791a1dbdd6f0bb16482c26		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B13 5072 bytes
font_01_sfnt_off00007c7a.bin
4d67af374a88dde93df5db77956c338b9f139413ebe9609de2b4150af35c6783		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C7A 10120 bytes

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