Malicious PDF — malware analysis report

Static analysis result for SHA-256 d46e8d8a5a65c13a…

MALICIOUS

PDF

44.4 KB Created: 2020-08-30 12:53:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7979ca7de3dd722c95c5018e8fe636c2 SHA-1: c9a815acb8867d6a6b3f9aea08b6f4e7e301c835 SHA-256: d46e8d8a5a65c13ac363ddf86bd5ccb93de96f4310bff4298bc3e8477df537d9
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with one prominent link leading to a redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.me/wix?keyword=manual+vernier+caliper+reading' which is also flagged as a malicious redirector. This suggests the document is designed to trick users into clicking the link, likely for phishing or malware distribution.

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.me/wix?keyword=manual+vernier+caliper+reading
    • https://cdn.shopify.com/s/files/1/0436/3098/5376/files/rubukugurenuraralumexopa.pdf
    • https://cdn.shopify.com/s/files/1/0462/1592/1818/files/excel_expense_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0434/0698/3333/files/sibazefonofun.pdf
    • https://cdn.shopify.com/s/files/1/0433/2702/9400/files/asio4all_treiber_mac.pdf
    • https://cdn.shopify.com/s/files/1/0436/6237/7113/files/tinker_s_construct_traits.pdf
    • https://cdn.shopify.com/s/files/1/0431/7144/6939/files/vesajijejexub.pdf
    • https://cdn.shopify.com/s/files/1/0431/6954/6395/files/bad_boy_buggy_service_manual.pdf
    • https://static.usrfiles.com/ugd/b8c837_73dfdb07c00641189e673e1cfdbd9d78.pdf
    • https://static.usrfiles.com/ugd/73f3b0_3342fc0312b34a9ca53f6fbe6c493018.pdf
    • https://static.usrfiles.com/ugd/1d64af_7123143a70664c10bcd842f49a620900.pdf
    • https://static.usrfiles.com/ugd/ae15ca_e6071d4b824f4e47a11c2ef19683ec04.pdf
    • https://static.usrfiles.com/ugd/b8c837_9acc212e5ff740a98d511d212432a204.pdf
    • https://cdn.shopify.com/s/files/1/0433/8289/8840/files/13051118338.pdf
    • https://cdn.shopify.com/s/files/1/0435/3556/4949/files/63547749586.pdf
    • https://cdn.shopify.com/s/files/1/0428/7610/8956/files/56079071110.pdf
    • https://cdn.shopify.com/s/files/1/0430/5023/8101/files/bully_anniversary_edition_geography_2_answers.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_off00006f9b.bin
16ab9516d2e969d67a37d7d942dc2aff115fcbf7eb1eac9e57a9e4517a9b776f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F9B 5128 bytes
font_01_sfnt_off0000811c.bin
c14decf810007191af9af060ff403b2d8abf56d452665febab00c67ebec6ea47		 pdf-font-stream PDF embedded font (sfnt) at offset 0x811C 10280 bytes

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