Malicious PDF — malware analysis report

Static analysis result for SHA-256 d51770b0832a5f2c…

MALICIOUS

PDF

35.4 KB Created: 2020-09-01 00:00:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 486366239fd6fbb1c22e5df269ab0047 SHA-1: be8b3f95917e78c936ef34957f802114bdfa4eed SHA-256: d51770b0832a5f2c13ebe2423b064c70f61faa6ad0f46b2365463881238c775c
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=cessna+150f+service+manual'. This URL is likely used to redirect users to a malicious site. The document also contains a large number of embedded links, characteristic of a link farm, further supporting the malicious intent. No scripts were extracted from this sample.

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/pify?keyword=cessna+150f+service+manual
    • https://cdn.shopify.com/s/files/1/0439/4162/6011/files/29575471367.pdf
    • https://cdn.shopify.com/s/files/1/0448/9094/7739/files/bingo_paper.pdf
    • https://cdn.shopify.com/s/files/1/0435/9408/8616/files/capitulo_6a-_8_crossword_answers.pdf
    • https://cdn.shopify.com/s/files/1/0432/2174/5822/files/busybox_apk_pro_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/73792904944.pdf
    • https://static.usrfiles.com/ugd/b8c837_40f97e0fbb804426817f6eb5bfaa3cf0.pdf
    • https://static.usrfiles.com/ugd/77eba6_4c0eb298ed184bfeb4a65d0ece11f0a7.pdf
    • https://static.usrfiles.com/ugd/b8c837_935a8343ec544018a841e5ed105e3f9f.pdf
    • https://static.usrfiles.com/ugd/c345b0_c7ae1c0f62a648489b7732112f200f33.pdf
    • https://static.usrfiles.com/ugd/c3f88d_3e172881da8b4954ac376b517fd5ef60.pdf
    • https://static.usrfiles.com/ugd/6924eb_f3d43c378a814add80e3019e4f63629b.pdf
    • https://static.usrfiles.com/ugd/e2f197_c9b88e9a03224ae08c8ed8282bea1f20.pdf
    • https://static.usrfiles.com/ugd/2e4eb4_513c51d361c2426893953be518492ff7.pdf
    • https://static.usrfiles.com/ugd/b8c837_117d75b6444e4070a4938bab2526fbed.pdf
    • https://cdn.shopify.com/s/files/1/0440/4455/0294/files/valvoline_wiper_blades_application_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/2649/7182/files/delegatus_non_potest_delegare_notes.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_off00004d27.bin
36a74eb39c88e6de7a35db4677848af9e476662190594f7933320fb6abf0c31d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4D27 5312 bytes
font_01_sfnt_off00005f2f.bin
0e9a1366be51e84a6ea5ddd9581105b8e274b8f6c9efd490fb33b06bbe526c4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F2F 10124 bytes

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