Malicious PDF — malware analysis report

Static analysis result for SHA-256 38e042e2583b33ac…

MALICIOUS

PDF

57.7 KB Created: 2020-08-10 21:50:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8687a25ba6da4dd9bd51c2fb3c9e932a SHA-1: 4da7f1b11dc513a6978726020296aa4897e7f81e SHA-256: 38e042e2583b33ac4579d1b8ec4961e225db9fe03d73b9710f5a6799b503a2a2
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=anestesia+regional+intravenosa+pdf'. This indicates the document's primary purpose is to redirect the user to a malicious site. The PDF also contains a link farm heuristic, suggesting it's part of a larger SEO poisoning or link spam campaign. No scripts were extracted, but the presence of a malicious redirector is sufficient to classify the 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.com/pify?keyword=anestesia+regional+intravenosa+pdf
    • http://files.atherstonegallery.co.uk/uploads/1/3/1/3/131398449/tadomojadukifej_fusizewib_vegiwuxunufetiz.pdf
    • http://files.castleofgeckos.com/uploads/1/3/0/9/130969001/1413146.pdf
    • http://files.elliotgardner.com/uploads/1/3/1/4/131453484/e753adcf.pdf
    • https://cdn.shopify.com/s/files/1/0435/1596/9688/files/99939461842.pdf
    • https://cdn.shopify.com/s/files/1/0431/6820/2901/files/57181626931.pdf
    • https://cdn.shopify.com/s/files/1/0429/9997/1999/files/77649580310.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/67142307476.pdf
    • https://cdn.shopify.com/s/files/1/0432/1745/3211/files/65038206227.pdf
    • https://cdn.shopify.com/s/files/1/0429/1677/4054/files/60592391244.pdf
    • https://cdn.shopify.com/s/files/1/0432/7519/0422/files/54893549803.pdf
    • https://cdn.shopify.com/s/files/1/0432/9222/9797/files/sama_veda_sandhyavandanam_book_in_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0431/9395/8560/files/53873090923.pdf
    • https://cdn.shopify.com/s/files/1/0435/2396/5079/files/divuliz.pdf
    • https://cdn.shopify.com/s/files/1/0436/1220/9314/files/core_exercises_with_medicine_ball.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000093dd.bin
c412534dfc68dea2645a84de32c043ab33df36409d4d8d98851f47475602f651		 pdf-font-stream PDF embedded font (sfnt) at offset 0x93DD 1916 bytes
font_01_sfnt_off00009d0c.bin
b6be224c626442491821e5249ec37cd27eaa614880e564bc66ad3c70f31864fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9D0C 5256 bytes
font_02_sfnt_off0000aefc.bin
4dc01f05b53120b150a0206309a8f5ffbba6963e52f2c6033ed0b641214b15f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAEFC 13416 bytes

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