Malicious PDF — malware analysis report

Static analysis result for SHA-256 0df13303dcbc36da…

MALICIOUS

PDF

46.2 KB Created: 2020-08-29 09:10:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dfba4ac5d003910dec83622cf03c0109 SHA-1: adf4c77ce0954ebe71c150f146c6ffcc71afe408 SHA-256: 0df13303dcbc36dae895cdebae1bd4e1e26a477d9392677f5bb9093dd20ceeac
154 Risk Score

Malware Insights

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

This PDF document contains multiple links, including one pointing to a known malicious redirector at 'ttraff.cc'. The document body and embedded links suggest a lure to trick users into visiting potentially harmful websites, likely for phishing or malware distribution. The ML classifier strongly indicated maliciousness, and the presence of a redirector URL supports this assessment.

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=volunteer+mortgage+loan+servicing+404+james+robertson+pkwy
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://static.usrfiles.com/ugd/b8c837_ac53266fbdf14e64bee3a99baf17e93b.pdf
    • https://static.usrfiles.com/ugd/b8c837_0c98e0e70f5b47a8b89258136dead7be.pdf
    • https://static.usrfiles.com/ugd/b8c837_9436f4bf0adf43519e33418329dfb0f1.pdf
    • https://static.usrfiles.com/ugd/b8c837_68a5d3c55f344a95a4998d1bb1290c7a.pdf
    • https://static.usrfiles.com/ugd/b8c837_851f96e37cb9445dbee9da648d5e6290.pdf
    • https://static.usrfiles.com/ugd/b8c837_d3a022e49e44449db2e330a55a377e53.pdf
    • https://static.usrfiles.com/ugd/b8c837_465b0c3ebe4b43219b3f6ec87d22ccf5.pdf
    • https://static.usrfiles.com/ugd/b8c837_6fe995ee5fed4cb8b55b621b8130316c.pdf
    • https://static.usrfiles.com/ugd/b8c837_beca9e4ba94f44a2b7e5625795313e4e.pdf
    • https://static.usrfiles.com/ugd/b8c837_065e57306a804e498b2f6d58cd73db0c.pdf
    • https://cdn.shopify.com/s/files/1/0433/0009/4112/files/punjabi_couple_pictures.pdf
    • https://cdn.shopify.com/s/files/1/0429/8116/3157/files/nepifudepija.pdf
    • https://cdn.shopify.com/s/files/1/0430/6262/4417/files/fopiwonogujakofutego.pdf
    • https://cdn.shopify.com/s/files/1/0431/9579/3571/files/71206212558.pdf
    • https://cdn.shopify.com/s/files/1/0451/7547/2279/files/bass_guitar_lessons_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/4553/5400/files/map_of_africa_political.pdf
    • https://cdn.shopify.com/s/files/1/0430/8090/8954/files/chamois_crib_sheet_pottery_barn.pdf
    • https://cdn.shopify.com/s/files/1/0438/9981/4040/files/97063575717.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063fe.bin
3d35e262656048d35c309053b5d2b47fb56aba4666e1da877629c5a0992be866		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63FE 5864 bytes
font_01_sfnt_off000077ff.bin
b6302739bdb38c0537b7cab5f0cc869d1ea23b0f12dce3b75e42a18343cae02c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77FF 10872 bytes
font_02_sfnt_off00009ca6.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9CA6 4324 bytes

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