Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f4fe389563f247c…

MALICIOUS

PDF

44.6 KB Created: 2020-08-30 17:55:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 52d6f022a392798b9c6a542d1771a448 SHA-1: d6e328e7ab4c9e0a5863c525e3847fd6a39e20e5 SHA-256: 9f4fe389563f247ccba43a6c0d15cddc0e00624081428b7ea0b5afd4b02dcabe
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=nombres+para+perritas'. Additionally, it exhibits a PDF link farm heuristic, with numerous links hosted on cdn.shopify.com, suggesting an attempt to obscure the final malicious destination. The document body, though partially corrupted, contains the same redirector URL, reinforcing its malicious intent. The primary goal appears to be redirecting users to potentially harmful content.

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/wix?keyword=nombres+para+perritas
    • https://cdn.shopify.com/s/files/1/0428/6060/9703/files/noida_map_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/9011/5748/files/learning_german_alphabet.pdf
    • https://cdn.shopify.com/s/files/1/0429/3948/2278/files/72947136238.pdf
    • https://cdn.shopify.com/s/files/1/0430/2376/1571/files/immersive_engineering_shader.pdf
    • https://cdn.shopify.com/s/files/1/0429/1624/9767/files/52733192429.pdf
    • https://cdn.shopify.com/s/files/1/0429/9866/1279/files/logo_quiz_level_1_answers_by_bubble.pdf
    • https://cdn.shopify.com/s/files/1/0433/8489/7701/files/wuremeforigevipaza.pdf
    • https://cdn.shopify.com/s/files/1/0431/8520/9507/files/wanawepuzepapixoj.pdf
    • https://cdn.shopify.com/s/files/1/0437/6703/8109/files/59938436566.pdf
    • https://cdn.shopify.com/s/files/1/0463/1314/4482/files/angie_tribeca_season_4_episode_guide.pdf
    • https://cdn.shopify.com/s/files/1/0436/0421/3917/files/stalker_shadow_of_chernobyl_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/3735/1326/files/zesitikuf.pdf
    • https://static.usrfiles.com/ugd/b8c837_7ae687dded894163a8793a6b9aac9a69.pdf
    • https://static.usrfiles.com/ugd/d7ba0f_bd7ad2a0d3304424ba4387bc2e6d320e.pdf
    • https://static.usrfiles.com/ugd/b8c837_41d13a3249a24646b06d8eedd46bd597.pdf
    • https://static.usrfiles.com/ugd/b5aed9_9643d1bc27184e46b7747b185b101f53.pdf
    • https://static.usrfiles.com/ugd/b8c837_de70664321e94bd5ae1b2183916fa764.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_off00006ee3.bin
2d0526d8e2263240ca05a3c7b5a4f5d917f20d5d8ed9c2daea909f46e78032a7
pdf-font-stream PDF embedded font (sfnt) at offset 0x6EE3 5044 bytes
font_01_sfnt_off00007feb.bin
0e7f76e613ce16eea669c3e4bb8e049f4467829a33ca2c8a11980a37bdbff547
pdf-font-stream PDF embedded font (sfnt) at offset 0x7FEB 11116 bytes