Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f10871f0ea0277c…

MALICIOUS

PDF

38.9 KB Created: 2020-08-24 04:06:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 00bb18d009ffe1998463458e4478448f SHA-1: b7db696d4b909ea72cb0fdb239cd6ae0bee661d3 SHA-256: 8f10871f0ea0277c0de1ddc3e777c1cb481e93077ef729aceed136525514c0ad
150 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, with numerous embedded URLs pointing to external resources. One critical heuristic identifies a malicious redirector link, and another flags a mass external PDF link farm. The primary malicious URL is https://ttraff.cc/pify?keyword=bhoot+bhangra+song++djpunjab, which likely serves as a gateway to further malicious content. The document body contains garbled text and some URLs, but the core malicious functionality appears to be driven by the embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=bhoot+bhangra+song++djpunjab
    • http://luwuxitu.4livesports.com/uploads/1/3/1/1/131164312/6c8d91ff8c52226.pdf
    • http://files.aturnermedia.com/uploads/1/3/2/7/132741211/furefabid-pijerivafododo.pdf
    • http://files.radicalwhispers.org/uploads/1/3/1/8/131856191/nedofoteguvokogitox.pdf
    • http://files.romanticism5000.com/uploads/1/3/2/6/132680962/jojepa-dojakuneselisex-kuban.pdf
    • http://files.uoflelsb.org/uploads/1/3/0/9/130969440/xofiguvekidubim_saluretojuvun_xajarewoba_dozolexamalowem.pdf
    • https://cdn.shopify.com/s/files/1/0434/8336/5528/files/mevugek.pdf
    • https://cdn.shopify.com/s/files/1/0441/2178/4472/files/avatar_korra_episode_guide.pdf
    • https://cdn.shopify.com/s/files/1/0462/0333/8902/files/rupinder_gandhi_movie_okpunjab.pdf
    • https://cdn.shopify.com/s/files/1/0437/4947/4453/files/carotid_duplex_ultrasound_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0438/3503/1712/files/lilisozatudini.pdf
    • https://cdn.shopify.com/s/files/1/0430/0010/3073/files/suguv.pdf
    • https://cdn.shopify.com/s/files/1/0447/3936/2970/files/html_to_converter_online_free_without_email.pdf
    • https://cdn.shopify.com/s/files/1/0436/9675/0742/files/nufig.pdf
    • https://cdn.shopify.com/s/files/1/0430/6393/5129/files/atomic_mass_of_elements_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/1403/7397/files/4507226620.pdf
    • https://cdn.shopify.com/s/files/1/0431/1551/1968/files/vujezisijilo.pdf
    • https://cdn.shopify.com/s/files/1/0447/0204/0217/files/anganwadi_teacher_application_form_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/1123/4197/files/23076492019.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30549310566.pdf
    • https://cdn.shopify.com/s/files/1/0427/6515/6508/files/nadiwofonawaduvojogule.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_off0000511a.bin
10fa39f918b7b7c2462dae4351b16cf35e552fdce3ad2427cd34d974187cc7ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x511A 5452 bytes
font_01_sfnt_off00006398.bin
69b8ad57a4a27b7c010576cbbdb56c54acb97fcc9e3480ee86db9456d31e96b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6398 14516 bytes

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