Malicious PDF — malware analysis report

Static analysis result for SHA-256 06219cb4cee4e84e…

MALICIOUS

PDF

57.8 KB Created: 2020-08-30 15:08:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a68633159495af79eb6965c8c72c9f1e SHA-1: 646e83cbc604deb4eadaca347e605a622290d62e SHA-256: 06219cb4cee4e84ed64a7cd85c73a583a1b649b1bccd54598dd63467c2c631e5
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to external PDF files, suggesting a link farm or SEO manipulation tactic. One prominent link, 'https://ttraff.link/wix?keyword=el+oscuro+carisma+de+hitler+pdf', is identified as a malicious redirector. This indicates the document is designed to lead users to malicious infrastructure, likely for further exploitation or phishing. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.link/wix?keyword=el+oscuro+carisma+de+hitler+pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/6142/7867/files/jusujutivu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8566/8255/files/charan_kanya_poem_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/3033/1039/files/bahubali_2_songs_malayalam_maango_me.pdf
    • https://cdn.shopify.com/s/files/1/0439/2147/3691/files/reporter_definition_computer.pdf
    • https://static.usrfiles.com/ugd/b8c837_9e97ca742095433ca6b4e60f8d16cf3a.pdf
    • https://static.usrfiles.com/ugd/b8c837_e75e5b6cba394369a89db85b6b5d8a88.pdf
    • https://static.usrfiles.com/ugd/b8c837_997157d551bc4884a913108b97e2cfbe.pdf
    • https://cdn.shopify.com/s/files/1/0432/6850/5764/files/89818639944.pdf
    • https://cdn.shopify.com/s/files/1/0432/1027/7025/files/free_android_phone_photo_recovery_software.pdf
    • https://cdn.shopify.com/s/files/1/0434/0128/1701/files/australian_history_timeline_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0428/1283/3959/files/cinema_hd_for_mac.pdf
    • https://static.usrfiles.com/ugd/50c35f_c45401f293334d14992d627b67240c88.pdf
    • https://static.usrfiles.com/ugd/b8c837_41dbe2e84a314494ad4f080c7dd49871.pdf
    • https://static.usrfiles.com/ugd/432b07_6435c35f5bac4baabc31697fd9d78137.pdf
    • https://static.usrfiles.com/ugd/b8c837_8a65298334da4510b6ed68a339334389.pdf
    • https://static.usrfiles.com/ugd/3aca14_221718f83cb9456fa2ba7f8332c25acf.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a2a1.bin
a8413e0548239b4333f8cab17f113eed37af6426bbef402c525bf6dd471e78af		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA2A1 5352 bytes
font_01_sfnt_off0000b4b1.bin
e989bc949569b26e6410186333ec0fc88e5ded2d5b96979427acd41d6e0af65b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB4B1 11068 bytes

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