Malicious PDF — malware analysis report

Static analysis result for SHA-256 666349cfbaadf994…

MALICIOUS

PDF

39.8 KB Created: 2020-08-29 17:08:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9619a153ba4a995eaef4dbc7e86f053e SHA-1: d63181bb2518a58204b20ddcb37474ab5a4201cf SHA-256: 666349cfbaadf994da48f8c6d16f6ede6a7513df11b723259664975bc3987e53
154 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which, 'https://ttraff.cc/wix?keyword=1408+movie+download+720p', is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting a lure for users to click and potentially download malware. The presence of numerous other Shopify links indicates a link farm strategy, likely to improve SEO for malicious content.

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=1408+movie+download+720p
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0440/5533/0981/files/agroforestry_lecture_notes.pdf
    • https://cdn.shopify.com/s/files/1/0428/3426/4231/files/wanefejopode.pdf
    • https://cdn.shopify.com/s/files/1/0470/6634/9736/files/the_ultimate_hang_free.pdf
    • https://cdn.shopify.com/s/files/1/0434/0878/5562/files/padosakafike.pdf
    • https://cdn.shopify.com/s/files/1/0434/5063/0296/files/sigipigarewesito.pdf
    • https://cdn.shopify.com/s/files/1/0433/0258/4480/files/xukaxevopimazimorowibaloj.pdf
    • https://cdn.shopify.com/s/files/1/0431/3199/4280/files/pogepub.pdf
    • https://static.usrfiles.com/ugd/b8c837_d6e2d46d0e454a4c8ba63f7b806c40a2.pdf
    • https://static.usrfiles.com/ugd/4ae4db_2f9ba97db407419ebe03615e2f362d08.pdf
    • https://static.usrfiles.com/ugd/b5472a_3678ad138adf4c5dac529170f619074f.pdf
    • https://static.usrfiles.com/ugd/b8c837_53d15e11b23a4e0795e6ea36f5975481.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_off00005dfa.bin
d7acd9e9588c2e34c6ceee08db0a302316e1d373eb0f7fac9a517b9597f2c579
pdf-font-stream PDF embedded font (sfnt) at offset 0x5DFA 5576 bytes
font_01_sfnt_off000070ff.bin
a4442f569f25027aaa9d0240131b4e4b9b82ad77d1bb2873c36108b7036ad82d
pdf-font-stream PDF embedded font (sfnt) at offset 0x70FF 9896 bytes