Malicious PDF — malware analysis report

Static analysis result for SHA-256 cea569e4c3bbf7bf…

MALICIOUS

PDF

41.8 KB Created: 2020-08-29 23:40:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 78240dc273ac119259e89cc61dc70d4a SHA-1: 9c1704a9bc2380e975a622211de8993580f34dba SHA-256: cea569e4c3bbf7bf9d5117825de2ed969dd796eb23e93979e3527ba0a68befc9
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, with one pointing to a known malicious redirector. The document body, though heavily obfuscated, also contains the URL for the malicious redirector. The presence of a link farm heuristic further supports the attack pattern of using numerous links for malicious purposes, likely to lure users to malicious sites or for SEO spam.

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/wix?keyword=american+dad+francine+parents
    • https://cdn.shopify.com/s/files/1/0430/1553/6793/files/rinewo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53522836856.pdf
    • https://cdn.shopify.com/s/files/1/0440/4002/8325/files/nedevebusi.pdf
    • https://cdn.shopify.com/s/files/1/0429/8620/9439/files/17329255337.pdf
    • https://cdn.shopify.com/s/files/1/0438/2942/8384/files/spirit_move_bethel_chords.pdf
    • https://cdn.shopify.com/s/files/1/0431/5345/7320/files/97205087110.pdf
    • https://cdn.shopify.com/s/files/1/0446/7975/7977/files/ford_focus_2013_manual.pdf
    • https://cdn.shopify.com/s/files/1/0427/8799/5807/files/96864818252.pdf
    • https://cdn.shopify.com/s/files/1/0428/9419/6902/files/dusonipiraji.pdf
    • https://cdn.shopify.com/s/files/1/0432/4923/8179/files/32264958542.pdf
    • https://cdn.shopify.com/s/files/1/0430/6645/8266/files/zagibufusezof.pdf
    • https://cdn.shopify.com/s/files/1/0435/1868/9432/files/negimokezowapu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/befuxaj.pdf
    • https://cdn.shopify.com/s/files/1/0438/9660/2779/files/bhojpuri_video_hd_dj_2018.pdf
    • https://cdn.shopify.com/s/files/1/0436/1905/7826/files/harley_davidson_battery_tender_800_manual.pdf
    • https://cdn.shopify.com/s/files/1/0462/7261/0464/files/the_animator_s_survival_kit_italiano.pdf
    • https://cdn.shopify.com/s/files/1/0430/7176/6681/files/kirexijasam.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_off000066bf.bin
c56b60e002c1b2b1e9dd1593878b027aff094e2373fb08e9ed06686d7972f851		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66BF 5260 bytes
font_01_sfnt_off0000787c.bin
08a2e003b072c0ce23cbeab922a1b6c8ec275e40577fb7ba288a12996e5cc3be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x787C 9908 bytes

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