Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6769d2866ec6687…

MALICIOUS

PDF

89.7 KB Created: 2020-08-13 15:38:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3a7e4549f7c3dbcdb72e6fa88ad73c6d SHA-1: 9784ac4b288d9bc5a70d8ca83bc50e0e26d75bf5 SHA-256: d6769d2866ec6687b191413f20cf73760ffd1cbe60dad1cc70945e2a3e751340
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=biblia+septuaginta+pdf+gratis'. This indicates the document's primary purpose is to redirect users to malicious sites. Another critical heuristic indicates a PDF link farm, with numerous external links, including one to 'https://cdn.shopify.com/s/files/1/0428/9173/9295/files/5487115651.pdf', suggesting a tactic to distribute malicious content or engage in SEO manipulation for malicious purposes.

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=biblia+septuaginta+pdf+gratis
    • http://files.windyridgecaravans.co.uk/uploads/1/3/0/7/130776239/7444117.pdf
    • http://files.amandaaverilloart.com/uploads/1/3/0/7/130738714/pojag-lababibodir.pdf
    • http://files.matasconsult.com/uploads/1/3/1/6/131636719/bevub-dumafu-zujavotozadufe-semaji.pdf
    • https://cdn.shopify.com/s/files/1/0428/9173/9295/files/5487115651.pdf
    • https://cdn.shopify.com/s/files/1/0432/1175/1579/files/kilivabi.pdf
    • https://cdn.shopify.com/s/files/1/0451/4159/0170/files/accumulator_register.pdf
    • https://cdn.shopify.com/s/files/1/0432/1699/4466/files/wobak.pdf
    • https://cdn.shopify.com/s/files/1/0435/5312/8612/files/71689473074.pdf
    • https://cdn.shopify.com/s/files/1/0437/8679/7213/files/wevofukezetofilox.pdf
    • https://cdn.shopify.com/s/files/1/0440/7181/3285/files/maulana_ashraf_ali_thanvi_books_in_urdu.pdf
    • https://cdn.shopify.com/s/files/1/0436/8482/3205/files/ruzuwafajun.pdf
    • https://cdn.shopify.com/s/files/1/0435/5971/4971/files/gixarafagifukafukep.pdf
    • https://cdn.shopify.com/s/files/1/0440/1197/8902/files/78981081213.pdf
    • https://cdn.shopify.com/s/files/1/0430/3591/8489/files/36067717270.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_off00011983.bin
f9d22dac2f11cd4dd5b851988033e2774aece47e1a3a0beeb177f13aeca13b6c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11983 5396 bytes
font_01_sfnt_off00012bdd.bin
028ce69ecd7a15c1272f7b10fd88ecb46ee2900628f729f4bd00b17c922a2b9c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12BDD 14148 bytes

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