Malicious PDF — malware analysis report

Static analysis result for SHA-256 31f3b96beca1bfd1…

MALICIOUS

PDF

46.9 KB Created: 2020-08-30 08:50:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 63daa7c46f0a7db45835b26c971ca870 SHA-1: 5389ea1285b34e43f9b86ccf453da9bffbcac1ad SHA-256: 31f3b96beca1bfd1d09eb9baf3c7da1a6562993c038ae40fc68476783d4f1ec0
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. Additionally, it exhibits a PDF link farm with numerous benign-looking PDFs hosted on Shopify, suggesting a potential SEO manipulation or content distribution scheme. The document body contains garbled text but includes the malicious URL, reinforcing the redirection attempt. No scripts were extracted, limiting further analysis of payload delivery.

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/wix?keyword=insurgency+sandstorm+customization
    • https://cdn.shopify.com/s/files/1/0431/8678/2369/files/chemistry_a_molecular_approach_4th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0437/2722/4986/files/golang_write_to_file.pdf
    • https://cdn.shopify.com/s/files/1/0429/2427/7923/files/fiboruzetitumenob.pdf
    • https://cdn.shopify.com/s/files/1/0428/1312/8871/files/du_llb_entrance_exam_2018_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0433/6828/4319/files/behance_app_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/4253/7629/files/1910414941.pdf
    • https://cdn.shopify.com/s/files/1/0428/7958/2374/files/beluwivunadat.pdf
    • https://cdn.shopify.com/s/files/1/0438/3296/7318/files/xalufuwibatas.pdf
    • https://cdn.shopify.com/s/files/1/0440/3170/5238/files/xatapafimogisogejoni.pdf
    • https://cdn.shopify.com/s/files/1/0448/1295/9905/files/organelos_de_la_celula_animal_y_sus_funciones.pdf
    • https://cdn.shopify.com/s/files/1/0431/5113/0785/files/bob_marley_is_this_love_lyrics.pdf
    • https://static.usrfiles.com/ugd/b8c837_bfa3c3610ba742a2be88244e439d246f.pdf
    • https://static.usrfiles.com/ugd/e2c250_1da45c2d2f324f6090727b16ac65b693.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006bff.bin
fc1426152883c69c767edb774f71844131dca619f0088817b7f18c918a3e89c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BFF 5200 bytes
font_01_sfnt_off00007d95.bin
bf918f7e3a4c105f27fe91c74b967445a2e753de45f6e736ad45723faf1b5512		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D95 10228 bytes
font_02_sfnt_off0000a088.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA088 4324 bytes

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