Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6d03b93247ab686…

MALICIOUS

PDF

39.0 KB Created: 2020-08-09 20:59:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 715721dfb784fe35901a5c9178ab3a25 SHA-1: 3b9399b9d6e63ff14a4bebfa9bca9d96fdec2ce2 SHA-256: d6d03b93247ab686778043165c70458e4c92bf2a2cb4e4d1d2e8370e190c9b78
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to downloading a book, suggesting a lure. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the presence of a link to malicious infrastructure, and PDF_SEO_LINK_FARM indicates a large number of external links, typical of SEO poisoning or phishing campaigns.

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=balasaheb+shinde+marathi+book+pdf+download
    • http://files.decoamerica.net/uploads/1/3/1/6/131606046/8148517.pdf
    • http://files.smokyridgecoffee.com/uploads/1/3/0/9/130969237/7221826.pdf
    • http://files.spotlightlima.com/uploads/1/3/1/4/131407423/naxafozate_muxizujar_naribixesor_zebeni.pdf
    • http://files.blusheventschicago.com/uploads/1/3/1/4/131410007/fopigijuted-zovop-wimeselana.pdf
    • https://cdn.shopify.com/s/files/1/0437/3282/8314/files/fesujo.pdf
    • https://cdn.shopify.com/s/files/1/0431/5945/3860/files/malomiwa.pdf
    • https://cdn.shopify.com/s/files/1/0430/9162/4096/files/bright_line_eating_cookbook.pdf
    • https://cdn.shopify.com/s/files/1/0431/8029/4298/files/fitadopexez.pdf
    • https://cdn.shopify.com/s/files/1/0440/4133/9030/files/star_wars_battlefront2_ps2_cheats.pdf
    • https://cdn.shopify.com/s/files/1/0433/4744/3865/files/59692855665.pdf
    • https://cdn.shopify.com/s/files/1/0431/3730/2690/files/fivukanoxotunilarezizeve.pdf
    • https://cdn.shopify.com/s/files/1/0431/8248/9762/files/vigasovuvizaf.pdf
    • https://cdn.shopify.com/s/files/1/0429/9541/7237/files/25258071231.pdf
    • https://cdn.shopify.com/s/files/1/0435/8494/6333/files/54033700818.pdf
    • https://cdn.shopify.com/s/files/1/0432/9085/3531/files/19828868487.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_off00005973.bin
b2a80984d639a72f26d1d629ba8aa5d88c7f6c63270bef1caefe91fe7eaf95d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5973 5628 bytes
font_01_sfnt_off00006c74.bin
27cc3caee12a8a4982a9b571e3f64967ccc42fd9212cfb32dcd033fc89717523		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C74 10224 bytes

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