Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6d0954aa145b5f6…

MALICIOUS

PDF

42.8 KB Created: 2020-08-11 20:40:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8eed355a6128975964d436dc1e10a919 SHA-1: 36df59d0fcb57496d774a0daf27410a35a98d7d5 SHA-256: b6d0954aa145b5f6c8fe33ec8d9a5dc0fcbbcf7e386423700772b06299375fb7
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely intended to lead the user to a malicious site. The document body, though heavily obfuscated, also contains this URL, suggesting it is a primary lure. The presence of numerous other links, many hosted on seemingly unrelated domains, indicates a link farm strategy to obscure the malicious intent.

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.cc/wb?keyword=quran%20sharif%20urdu%20tarjuma%20pdf
    • http://files.tiftcountysoccer.com/uploads/1/3/0/7/130739895/55649f7adc7cd.pdf
    • http://files.ladyteviot.co.uk/uploads/1/3/1/3/131378943/dibogomesakoxu-veleramodekit-kadop.pdf
    • http://files.westsidecommunitycentre.co.uk/uploads/1/3/0/9/130969354/212a65.pdf
    • http://files.mariapressentin.com/uploads/1/3/1/3/131379266/2bce497f.pdf
    • http://files.tgu-greven.com/uploads/1/3/1/4/131452846/399716f336.pdf
    • https://cdn.shopify.com/s/files/1/0446/4531/8819/files/calidad_de_vida_en_el_trabajo_en_mexico.pdf
    • https://cdn.shopify.com/s/files/1/0428/8475/9711/files/pomezadelinemu.pdf
    • https://cdn.shopify.com/s/files/1/0431/5381/7762/files/domonizuditazilasika.pdf
    • https://cdn.shopify.com/s/files/1/0438/7527/0811/files/treatment_of_myocardial_infarction.pdf
    • https://cdn.shopify.com/s/files/1/0432/5038/5051/files/69051512702.pdf
    • https://cdn.shopify.com/s/files/1/0432/8354/6267/files/70775486229.pdf
    • https://cdn.shopify.com/s/files/1/0428/2603/9463/files/pusovubifetu.pdf
    • https://cdn.shopify.com/s/files/1/0430/9339/3557/files/29984158886.pdf
    • https://cdn.shopify.com/s/files/1/0431/8478/3509/files/19972765016.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/28650507632.pdf
    • https://cdn.shopify.com/s/files/1/0440/1024/2198/files/23186646040.pdf
    • https://cdn.shopify.com/s/files/1/0430/4034/2169/files/46673346423.pdf
    • https://cdn.shopify.com/s/files/1/0435/4198/7479/files/janatananodokakovemowejel.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_off00005c72.bin
ec49e5021b28749b4c5325cc8a021c53a086e2f844d3a94985a0e3252eb9ed7c
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C72 5384 bytes
font_01_sfnt_off00006e92.bin
cb2eed780186f57217afd848296ff7accd1e5368d70881e70921f0b3d5b39ed0
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E92 15464 bytes