Malicious PDF — malware analysis report

Static analysis result for SHA-256 95eb806f02bf458e…

MALICIOUS

PDF

41.2 KB Created: 2020-08-31 13:59:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cf33644fd4c90ac85a9bb5f81a6a5057 SHA-1: 38ce3ab7dd29f31ea132fd599c8567cc9b63d77a SHA-256: 95eb806f02bf458ec6779122ac27ecc17eda37a77f48adebd889e859558f0e51
152 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with one identified as a malicious redirector. The primary malicious link, 'https://ttraff.ru/wix?keyword=tri+fold+brochure+template+ai+file', suggests a lure related to design templates, likely intended to lead users to a malicious site. The presence of a large link farm, even with many benign-looking Shopify links, indicates a coordinated effort to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=tri+fold+brochure+template+ai+file
    • https://cdn.shopify.com/s/files/1/0432/6116/5723/files/download_minimizer.pdf
    • https://cdn.shopify.com/s/files/1/0429/9309/0714/files/amazon_web_services_tutorial._download.pdf
    • https://cdn.shopify.com/s/files/1/0444/0319/6070/files/voicemeeter_banana_echo.pdf
    • https://cdn.shopify.com/s/files/1/0428/7981/1750/files/wordly_wise_3000_book_8_lesson_6_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0464/1187/4472/files/82506210226.pdf
    • https://static.usrfiles.com/ugd/daca0d_602adb64d1bd40a2a5d8f34d2de2eb62.pdf
    • https://static.usrfiles.com/ugd/c1615c_92f434c5435d4526aa4050a0079b57f5.pdf
    • https://static.usrfiles.com/ugd/122077_06b78a021ee448f9986ee277d54fc251.pdf
    • https://static.usrfiles.com/ugd/b42fd6_087af9ae4f2b465bbcc26540adff8d2c.pdf
    • https://cdn.shopify.com/s/files/1/0430/8529/9874/files/berg_balance_scale_rehab_measures.pdf
    • https://cdn.shopify.com/s/files/1/0435/4732/8664/files/npmcn_candidate_declaration_form.pdf
    • https://cdn.shopify.com/s/files/1/0433/8299/7148/files/bizhub_c360_firmware.pdf
    • https://cdn.shopify.com/s/files/1/0431/2930/7287/files/pugiwodezosaxoxodu.pdf
    • https://cdn.shopify.com/s/files/1/0430/7940/1634/files/24021510748.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_off0000642f.bin
3163eec471e11f42b3e4781dab841740e6f38336da54905d347d640ad24c9c47
pdf-font-stream PDF embedded font (sfnt) at offset 0x642F 5308 bytes
font_01_sfnt_off00007607.bin
927fed8ae923c8b328e2962ed5973ac1286c571e0f2705f80322afff8e7ef26e
pdf-font-stream PDF embedded font (sfnt) at offset 0x7607 9964 bytes