Malicious PDF — malware analysis report

Static analysis result for SHA-256 93db7c0d31247d4b…

MALICIOUS

PDF

41.0 KB Created: 2020-08-25 02:55:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7b7417d83cc72d97bcea658589a9860c SHA-1: c1e62f3736b8a393655ac753cc34334fca847a9b SHA-256: 93db7c0d31247d4beeb92ca49ad60f09ee926de48ecba984dd4b4ddc33ab8398
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with the primary link pointing to a known malicious redirector. The heuristic firings indicate a PDF link farm, suggesting the document's purpose is to distribute or redirect to malicious content, potentially for SEO manipulation. No scripts were extracted, but the extensive linking strategy is indicative of a malicious distribution method.

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/pify?keyword=the+rise+of+islam+crossword+puzzle+answers
    • http://files.carpetcleaning352.com/uploads/1/3/1/1/131164048/gozuderoweniguz.pdf
    • http://files.mrmoeshow.com/uploads/1/3/2/6/132681558/xironefar.pdf
    • http://files.labcharter-pto.com/uploads/1/3/1/3/131379434/4b32ad6.pdf
    • https://cdn.shopify.com/s/files/1/0433/9616/9886/files/mississippi_cdl_hazmat_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0435/1596/9688/files/xiginolidibipuxiro.pdf
    • https://cdn.shopify.com/s/files/1/0430/3486/9921/files/28246246597.pdf
    • https://cdn.shopify.com/s/files/1/0435/1095/6196/files/65613478609.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vitalifurefafimeribedewo.pdf
    • https://cdn.shopify.com/s/files/1/0441/0087/8488/files/57965648667.pdf
    • https://cdn.shopify.com/s/files/1/0461/3757/3529/files/tulufekezoka.pdf
    • https://cdn.shopify.com/s/files/1/0454/6763/1782/files/bollywood_movie_website_free.pdf
    • https://cdn.shopify.com/s/files/1/0434/7127/4146/files/acura_rdx_2019_review_consumer_reports.pdf
    • https://cdn.shopify.com/s/files/1/0431/0695/9514/files/kivonez.pdf
    • https://cdn.shopify.com/s/files/1/0434/5754/4342/files/livasesereseli.pdf
    • https://cdn.shopify.com/s/files/1/0434/5036/8152/files/lofalevevebenijuvavoses.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_off000060db.bin
85f97a4eb80aa2f2ab85057aa9df874e7b1a051b721e09d01650f768af007d7d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60DB 5488 bytes
font_01_sfnt_off00007379.bin
db1f225ca3b8066faf5dd5e4d1bfa030e6ec6d969f54303fda795ab2815a868e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7379 10716 bytes

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