Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9c630e42712887c…

MALICIOUS

PDF

38.7 KB Created: 2020-08-23 01:44:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 92b2484621e66e7c5dc1de1bad386a8d SHA-1: 7e474b8f2c8dbbb264ff76c889d141b1899837db SHA-256: f9c630e42712887c55dd8f73f395f25cddf66a6fc0a27095127598b6024f4c30
120 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the same malicious URL and appears to be a lure for a game guide. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, suggesting a link farm for SEO manipulation or to distribute malicious content.

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=dude+simulator+3+guide
    • http://files.universitychurchofchristtyler.com/uploads/1/3/1/4/131437977/dapujam_kijibatikin_vonegilirafem_midikul.pdf
    • http://files.franciscanfoundation.org/uploads/1/3/0/7/130775825/kizomimora-gojelobowi-podexodi.pdf
    • http://logezo.snohomishvalleygolfcenter.com/uploads/1/3/0/9/130969596/4326953.pdf
    • https://cdn.shopify.com/s/files/1/0438/5452/8677/files/ielts_band_9_writing_task_1.pdf
    • https://cdn.shopify.com/s/files/1/0428/3714/7811/files/certificato_anamnestico_modulo.pdf
    • https://cdn.shopify.com/s/files/1/0451/7930/6135/files/bunobipabisunesidapisa.pdf
    • https://cdn.shopify.com/s/files/1/0430/7727/1716/files/john_deere_la115.pdf
    • https://cdn.shopify.com/s/files/1/0431/0928/6050/files/5498643459.pdf
    • https://cdn.shopify.com/s/files/1/0430/4486/4149/files/befolinavefifodi.pdf
    • https://cdn.shopify.com/s/files/1/0430/9388/5089/files/87995898230.pdf
    • https://cdn.shopify.com/s/files/1/0431/3962/9218/files/95289272734.pdf
    • https://cdn.shopify.com/s/files/1/0434/2926/5574/files/java_8_update_171_64_bit.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_off00005996.bin
2c515f00b5105e30c7fbb0b95a82fe65afa6cf7dd9da30eb015ea78ef2806151		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5996 5308 bytes
font_01_sfnt_off00006b8a.bin
a1dd8730d171045232ff264e1dd76518a7694ea7d4067ec36eaa7b6fb7874243		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B8A 10192 bytes

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