Malicious PDF — malware analysis report

Static analysis result for SHA-256 866b0f72ff378d82…

MALICIOUS

PDF

41.3 KB Created: 2020-09-01 22:57:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 59b492f4ac1fc22536d2fae7d6e0dd49 SHA-1: bbb37debfa78b5934abb3f5e99440b31dbb0a9a1 SHA-256: 866b0f72ff378d828daeb0a730c725aa4dbb527a89361aa1c6acab39455ace03
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/wix?keyword=flower+bouquet+png+free'. This URL is presented within the document body, suggesting an attempt to trick the user into visiting a malicious site under the guise of a free image. The file also contains a large number of external PDF links, indicating a potential link farm or SEO manipulation tactic. 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.cc/wix?keyword=flower+bouquet+png+free
    • https://cdn.shopify.com/s/files/1/0433/3957/9546/files/50666953743.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4899/files/mathematics_aptitude_test_questions_answers.pdf
    • https://cdn.shopify.com/s/files/1/0433/4583/8232/files/disukupiguwa.pdf
    • https://cdn.shopify.com/s/files/1/0433/2588/2520/files/anatomie_du_systme_digestif.pdf
    • https://static.usrfiles.com/ugd/fb83f1_942bab6b816741a4a7e4505b7cbebb6f.pdf
    • https://static.usrfiles.com/ugd/90423f_3cfb598d4e7c47d991469ba9e338d8ac.pdf
    • https://cdn.shopify.com/s/files/1/0431/6132/1634/files/49493089499.pdf
    • https://cdn.shopify.com/s/files/1/0437/0300/9430/files/senior_girl_scout_way_badge_requirements.pdf
    • https://static.usrfiles.com/ugd/9219f8_2f609aae35c0452593cca7a38b6d9205.pdf
    • https://static.usrfiles.com/ugd/d99ef3_954d370c3a5546dca0b9c7e7c06efbea.pdf
    • https://static.usrfiles.com/ugd/784815_5633b3ec221e4a2daa9dd02aa1f1de26.pdf
    • https://static.usrfiles.com/ugd/9757e7_7501e703cbe94d549167a45a1b00577b.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_off00005cd4.bin
f7f3c3db205acb5d8eabd8d2b7714ee190876c80823ae1ac06b1569a949a4427		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CD4 4996 bytes
font_01_sfnt_off00006df4.bin
a7921e1f22a3b9f131f1d26e0a30b1579b95f06bc21b675b004e759a1faecb7f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DF4 1728 bytes
font_02_sfnt_off0000768e.bin
456d1ab084fce287dcb18d5ea48ea8ab092d08302e48acb5ce852a4da585439c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x768E 9952 bytes

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