Malicious PDF — malware analysis report

Static analysis result for SHA-256 4592f4d8140c8fed…

MALICIOUS

PDF

32.5 KB Created: 2020-08-21 21:49:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 74640c278b340a3be91957e11466a459 SHA-1: 75ec6bf8bcfef6c39ab7b700998f81b05211cbf2 SHA-256: 4592f4d8140c8fed330d8ade002f4a265b7e0ad352102ece007a25fe44260340
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=biromes+y+servilletas+pdf'. This indicates the document's primary purpose is to lure the user to a potentially harmful site. The presence of numerous other PDF links, many hosted on unknown domains, further supports a link farm or redirection strategy. No scripts were extracted, but the embedded URLs are sufficient to infer a malicious redirection 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=biromes+y+servilletas+pdf
    • http://files.casperpecancompany.com/uploads/1/3/1/4/131414240/3e465.pdf
    • http://jejabi.lataca.co.uk/uploads/1/3/1/4/131453060/9943529.pdf
    • http://files.40simpleways.com/uploads/1/3/0/7/130739028/salonozama.pdf
    • http://files.blackcommunityhousingservice.org/uploads/1/3/1/1/131164572/kuvunal.pdf
    • https://cdn.shopify.com/s/files/1/0435/7334/6472/files/2020_toyota_camry_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/2283/4071/files/26514293504.pdf
    • https://cdn.shopify.com/s/files/1/0432/7204/4697/files/62700943268.pdf
    • https://cdn.shopify.com/s/files/1/0430/2897/1674/files/guzetexej.pdf
    • https://cdn.shopify.com/s/files/1/0428/2669/4822/files/buxewugobitikiruvevif.pdf
    • https://cdn.shopify.com/s/files/1/0429/7677/2250/files/69028233291.pdf
    • https://cdn.shopify.com/s/files/1/0429/2476/9436/files/suwatefos.pdf
    • https://cdn.shopify.com/s/files/1/0434/6796/4580/files/89088432830.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_off0000419e.bin
6ce6d0f81ffebd9e6230729ffad01d11b73cfda31ccf4fd748a62427ac33e173		 pdf-font-stream PDF embedded font (sfnt) at offset 0x419E 5400 bytes
font_01_sfnt_off000053ed.bin
cbb76eea01617110e1eeffc87202867420c682c7d79a7328e416c66816c7fcae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53ED 9804 bytes

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