Malicious PDF — malware analysis report

Static analysis result for SHA-256 03ad32117006ee0b…

MALICIOUS

PDF

47.2 KB Created: 2020-08-22 09:15:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 82e2bb1e531653e9962c3e0349c25642 SHA-1: 120af02448b8693d7a1f6a43281bb94df61ccec4 SHA-256: 03ad32117006ee0b3c8f26c230d4e7a0f991bd7a25969154124d6f2c8fbf157e
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is designed to lead users to further malicious content. The document body also contains numerous links to external PDFs hosted on various domains, suggesting a link farm or distribution network. While no scripts were explicitly extracted, the presence of embedded URLs and the ML classifier's high confidence indicate malicious intent, likely for phishing or malware delivery.

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.com/pify?keyword=medical+admission+admit
    • http://tofew.ministryofunderwear.co.uk/uploads/1/3/1/3/131398591/7641244.pdf
    • http://files.super-sounds.com/uploads/1/3/1/4/131437984/poxoguw.pdf
    • http://files.partneringforsafety.com/uploads/1/3/1/8/131856539/fovozaxigozotalejef.pdf
    • http://nozutezin.artontheriverph.com/uploads/1/3/1/0/131070374/wejuke_toxom_gotod_bukilu.pdf
    • http://smc.org.in)MeeraRegularMeera2016SMC7.0.0+20171102Hussain
    • http://smc.org.inhttp://smc.org.in
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/9746/3715/files/70446359699.pdf
    • https://cdn.shopify.com/s/files/1/0435/6410/5886/files/74228241791.pdf
    • https://cdn.shopify.com/s/files/1/0434/1035/8423/files/gekuzofixowolugavek.pdf
    • https://cdn.shopify.com/s/files/1/0431/5381/7749/files/97951792353.pdf
    • https://cdn.shopify.com/s/files/1/0439/2484/8795/files/fojofuzagunuviluxinalav.pdf
    • https://cdn.shopify.com/s/files/1/0437/1900/0229/files/system_analysis_and_design_mca_notes.pdf
    • https://cdn.shopify.com/s/files/1/0431/0820/4708/files/rubisavexa.pdf
    • https://cdn.shopify.com/s/files/1/0435/2147/4714/files/senna_lol_guide.pdf
    • https://cdn.shopify.com/s/files/1/0434/7772/9430/files/doritewetipo.pdf
    • https://cdn.shopify.com/s/files/1/0434/5410/3713/files/7895420454.pdf
    • https://cdn.shopify.com/s/files/1/0441/2299/6888/files/antariksham_movie_songs_in_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0440/4386/2181/files/75864517864.pdf
    • https://cdn.shopify.com/s/files/1/0431/4021/9041/files/programming_python_lutz.pdf
    • https://cdn.shopify.com/s/files/1/0431/6472/9512/files/15612465766.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/
    • https://gitlab.com/smc/meera/blob/master/COPYING
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000075a8.bin
59d5e8212ce7a6e948eca2eef828b7d13a383a4642aa19592793e3cbebb0ff28		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x75A8 6976 bytes
font_00_sfnt_off000064c7.bin
5a4bd6b3de558c854fdf6415f1f67cf2f29664e4859153470e08360e77cdf4d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64C7 4996 bytes
font_02_sfnt_off00008dc2.bin
e5efbd76bd30141d28123116fb5e1d7090600b27c31bc2a6536c4175cc3a399d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DC2 9860 bytes

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