Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddc56cddd62d8ba3…

MALICIOUS

PDF

40.4 KB Created: 2020-08-17 17:01:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 411b49910c4bb77db1c5cdfac1d47f96 SHA-1: 7487e3e3e2f4fa12a1007473a2b667e3a13c5f8f SHA-256: ddc56cddd62d8ba38300a5e262e6bab1cf819846a7058f6ffb67895c5f20d061
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external resources, indicating a link farm. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is used to obscure the final destination. The document body also contains the URL for this redirector, suggesting it is the primary lure. The presence of numerous Shopify-hosted PDF links suggests an attempt to leverage SEO or create a large, distributed content farm for malicious purposes.

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/pify?keyword=rowdy+baby+telugu+hd+video+songs
    • http://xujup.jouvertinjune.com/uploads/1/3/2/6/132681409/8306674.pdf
    • http://files.thebearstfriendsfurevershow.com/uploads/1/3/0/8/130874359/pudaxuvibomiv-duragiberulewe.pdf
    • http://busoxemar.3queenspublish.com/uploads/1/3/2/6/132683014/vaguwesewir.pdf
    • http://larinazek.animalintuitivereading.com/uploads/1/3/2/6/132681352/kesilefe-zenakirer-sazazalupawuvin.pdf
    • https://cdn.shopify.com/s/files/1/0435/2134/3647/files/ben_10_alien_force_emuparadise.pdf
    • https://cdn.shopify.com/s/files/1/0430/4578/1665/files/2042728941.pdf
    • https://cdn.shopify.com/s/files/1/0433/9505/5777/files/62432511648.pdf
    • https://cdn.shopify.com/s/files/1/0438/5082/5893/files/puella_magi_madoka_magica_rebellion.pdf
    • https://cdn.shopify.com/s/files/1/0431/3173/2132/files/acr_guidelines_for_contrast_extravasation.pdf
    • https://cdn.shopify.com/s/files/1/0434/2376/0536/files/wokejikunumenimes.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/38804475130.pdf
    • https://cdn.shopify.com/s/files/1/0427/6686/0455/files/xovomes.pdf
    • https://cdn.shopify.com/s/files/1/0437/8958/2487/files/stories_for_1st_grade.pdf
    • https://cdn.shopify.com/s/files/1/0432/5598/8374/files/46575931712.pdf
    • https://cdn.shopify.com/s/files/1/0428/2001/0140/files/70890784293.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_off00005a61.bin
939977bbdceae934ae04c410051159747e408fec34811f3bc74dcff49020c5c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A61 5392 bytes
font_01_sfnt_off00006cd7.bin
70798e507b3664a71c053e2407b04e80db458f89c90da073eb5fe201713369ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CD7 12920 bytes

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