Malicious PDF — malware analysis report

Static analysis result for SHA-256 d69a83f91dfec337…

MALICIOUS

PDF

39.2 KB Created: 2020-08-06 09:54:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9697979ce67e59ce3ab55d29a342079b SHA-1: b42a245de940eda4a574b475cc37bc38b490a702 SHA-256: d69a83f91dfec337e2f8dd8f566227775ea5d26e53cd131f77138ed10dff35cd
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with one prominent link pointing to a known malicious redirector. The document body, though heavily obfuscated, also contains URLs that appear to be part of a link farm. This suggests the primary goal is to redirect the user to malicious infrastructure, likely for phishing or malware delivery. No scripts were extracted, limiting further analysis of the execution chain.

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.ru/wb?keyword=predictive%20maintenance%20based%20on%20event-log%20analysis%20a%20case%20study%20pdf
    • http://files.matthew-jarvis.co.uk/uploads/1/3/1/6/131606397/nimileko-renodu-rigozutonafovek.pdf
    • http://files.theendoftimechronicles.com/uploads/1/3/0/8/130874526/89893d8c09.pdf
    • http://mevofuso.workshoppersonline.com/uploads/1/3/1/6/131606027/9181377.pdf
    • http://files.anaheimvacationvilla.com/uploads/1/3/1/1/131164475/lisobibenapiropun.pdf
    • http://dedibibi.marra.cosmo-ufes.org/uploads/1/3/0/7/130775997/5500821.pdf
    • https://cdn.shopify.com/s/files/1/0433/4472/4133/files/30959610707.pdf
    • https://cdn.shopify.com/s/files/1/0429/3951/5039/files/sipoteturijisudugeku.pdf
    • https://cdn.shopify.com/s/files/1/0434/6436/0100/files/7526685104.pdf
    • https://cdn.shopify.com/s/files/1/0430/7245/4810/files/witapuzefufuzuwumuj.pdf
    • https://cdn.shopify.com/s/files/1/0437/0048/6312/files/wenegezilazugulu.pdf
    • https://cdn.shopify.com/s/files/1/0438/3513/0018/files/56053832541.pdf
    • https://cdn.shopify.com/s/files/1/0432/0336/2973/files/3d_movie_maker_windows_10.pdf
    • https://cdn.shopify.com/s/files/1/0428/4376/6950/files/62982323162.pdf
    • https://cdn.shopify.com/s/files/1/0430/6547/5226/files/sutixemurivijekip.pdf
    • https://cdn.shopify.com/s/files/1/0430/4093/1991/files/dovupabibabebomewesor.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/65545430121.pdf
    • https://cdn.shopify.com/s/files/1/0436/0703/1966/files/55615290768.pdf
    • https://cdn.shopify.com/s/files/1/0430/0662/3903/files/godoluloraruba.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_off00005921.bin
70f3a1904b1dc3fa4cb12de71890252b7a79124d3055c1f02218ba58ed9ceeac
pdf-font-stream PDF embedded font (sfnt) at offset 0x5921 5812 bytes
font_01_sfnt_off00006ce2.bin
a41763711d1c0db8960bc39cccd6e519a2662fd02ba47a3dd86b803850d13a72
pdf-font-stream PDF embedded font (sfnt) at offset 0x6CE2 10108 bytes