Malicious PDF — malware analysis report

Static analysis result for SHA-256 4202c94fccae196d…

MALICIOUS

PDF

32.2 KB Created: 2020-08-22 13:41:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 92bf8a161f333b9febf0a51d8f0701a0 SHA-1: c1024b143fb4dea5a39da0b440b44402b68fc7e5 SHA-256: 4202c94fccae196d89089220cbd61ae138c586d1e21f5acc06615b4aa7dbaa33
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, a technique often used in SEO poisoning or link farm attacks. One of the primary links, 'https://ttraff.ru/pify?keyword=green+lasagne+sheets+asda', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting it is the intended lure. The presence of numerous other links, including to shopify.com, indicates an attempt to broaden the reach or disguise 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.ru/pify?keyword=green+lasagne+sheets+asda
    • http://files.fhpsc.ca/uploads/1/3/1/4/131454190/sikifunem.pdf
    • http://files.beerliquordelivery.ca/uploads/1/3/2/7/132741064/2185065.pdf
    • http://files.educationfoundationoflm.org/uploads/1/3/2/7/132710779/gefiladotila-faturibilud-fufutelebo-xarumumovimomol.pdf
    • http://files.higgins-sinus.com/uploads/1/3/2/3/132302816/9415805.pdf
    • https://cdn.shopify.com/s/files/1/0430/4414/3253/files/mendelian_genetics_of_corn_kit_lab_answers.pdf
    • https://cdn.shopify.com/s/files/1/0430/7333/9559/files/91265033676.pdf
    • https://cdn.shopify.com/s/files/1/0431/5463/6966/files/1328054738.pdf
    • https://cdn.shopify.com/s/files/1/0432/5212/1762/files/53829900919.pdf
    • https://cdn.shopify.com/s/files/1/0439/4038/0840/files/appsc_group_2_syllabus_2020_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0429/1480/7974/files/bogafiwevopusijoteno.pdf
    • https://cdn.shopify.com/s/files/1/0427/7354/5116/files/32482709871.pdf
    • https://cdn.shopify.com/s/files/1/0431/5322/7936/files/37063082891.pdf
    • https://cdn.shopify.com/s/files/1/0429/9925/1093/files/tinkers_construct_material_traits.pdf
    • https://cdn.shopify.com/s/files/1/0436/4831/9638/files/78502310329.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_off0000433f.bin
22f66074f9806db22fe18decf22b9f38cc42ea2034f86488428f608783cb957a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x433F 5116 bytes
font_01_sfnt_off00005499.bin
997a7166061d57df0a2a2b99d5c711bcd19c5d539dac5543b425f06594ca50bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5499 9340 bytes

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