Malicious PDF — malware analysis report

Static analysis result for SHA-256 814fd3ab84dc70fd…

MALICIOUS

PDF

65.7 KB Created: 2020-08-31 02:40:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 72e3ba8785ee8aa449198a88bafd1e82 SHA-1: f5c404d34014c67ee02857f3c4ac4b8b0ac05b08 SHA-256: 814fd3ab84dc70fdfb6b43b5a72049e4ba649dd51c0629158e9cada6878cac6e
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains numerous embedded links, with one identified as a malicious redirector. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK and ML_NYX_PDF_MALICIOUS strongly indicate malicious intent. The primary malicious URL identified is https://ttraff.cc/wix?keyword=imran+series+by+ibne+safi+pdf, which is likely used to lure users to a malicious site.

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.cc/wix?keyword=imran+series+by+ibne+safi+pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://static.usrfiles.com/ugd/9734e7_5bc26d2d4a3a4c9280e0fb06935733fd.pdf
    • https://static.usrfiles.com/ugd/12f4eb_ef8bb87bc17642889d6b90e6ddab3791.pdf
    • https://static.usrfiles.com/ugd/67e251_c592ee5022cf46518e2b041c9d6b3da3.pdf
    • https://static.usrfiles.com/ugd/625844_99161daf0a7146e6a6d193ca0465c4b0.pdf
    • https://static.usrfiles.com/ugd/b914b5_7dfab37f71ee480687127b9d40cae9dc.pdf
    • https://cdn.shopify.com/s/files/1/0437/4000/4501/files/wordscapes_answers_level_72.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/83583068491.pdf
    • https://static.usrfiles.com/ugd/7603ae_44ba1ee364344bce93399b55be7c23a6.pdf
    • https://static.usrfiles.com/ugd/f0e51d_d45f5e95a2de4d67ac2e1380b62bfd07.pdf
    • https://static.usrfiles.com/ugd/5be868_f778c84f4875480e94c3dcb2dc701557.pdf
    • https://static.usrfiles.com/ugd/191a6d_57981e2229414650884dcfcbeaa67884.pdf
    • https://static.usrfiles.com/ugd/df4650_e47e37aaed3343578d8fbe8daf44f8ef.pdf
    • https://static.usrfiles.com/ugd/c1108c_c0b837cd688d457690d26b2bbaea0cce.pdf
    • https://static.usrfiles.com/ugd/b9801a_68f47bc53a5e425bb464914c924940cd.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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License
    • http://scripts.sil.org/OFL

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off0000b8a3.bin
7b809e0513158b4986f169f023ff2c9b89f062646f23e380d4c99980144c742e		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xB8A3 29932 bytes
font_00_sfnt_off000077a1.bin
04b298f84c2d1622120a92ed72e462e5b64ced087b6ac11784c76ac3171d755e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77A1 4932 bytes
font_01_sfnt_off00008830.bin
cf6f6b3adacc335531f68f77d2638e98d0e1dbd5bc69557905d88ae9a21b0841		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8830 15600 bytes
font_03_sfnt_off0000eb7a.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB7A 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.