Malicious PDF — malware analysis report

Static analysis result for SHA-256 034c204fc787258c…

MALICIOUS

PDF

37.7 KB Created: 2020-08-30 03:42:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 47a94e43e3c5ea21d6916a271e60d940 SHA-1: a94a44384b7a04dd536fcb2d24718fffaca34119 SHA-256: 034c204fc787258c3381c492515a6ff406b015b148f8728c29291c735ec57211
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, ttraff.com, which is part of a link farm designed to distribute malicious content. The document body, though heavily obfuscated, contains text related to 'the tipping point pdf free download' and the malicious URL, suggesting a lure for users to download potentially harmful files. The ML classifier also strongly indicated maliciousness.

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/wix?keyword=the+tipping+point+pdf+free+download
    • http://shurll.com/bkec5
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b8c837_904df9d6f3e7497d9e046fb0e9cc5efe.pdf
    • https://static.usrfiles.com/ugd/ce0e6d_097ffae52ef5488a8764247f6456253e.pdf
    • https://static.usrfiles.com/ugd/d2751c_fbffc4a3470d495b9e003699347441da.pdf
    • https://static.usrfiles.com/ugd/b8c837_896367473ce44bd59dd3671ef063cd83.pdf
    • https://static.usrfiles.com/ugd/7ea8bb_48b1e02526674b79bd99f1b6d081ed59.pdf
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/geographical_indication_of_goods_act_1999.pdf
    • https://cdn.shopify.com/s/files/1/0432/0477/1999/files/xiwogu.pdf
    • https://cdn.shopify.com/s/files/1/0439/4395/2539/files/xipapupotafumonomexo.pdf
    • https://cdn.shopify.com/s/files/1/0437/1726/3510/files/kakefebapogefixumekubuvav.pdf
    • https://cdn.shopify.com/s/files/1/0460/1983/8119/files/67399707280.pdf
    • https://static.usrfiles.com/ugd/576447_cd34919101844a8ba8e143cfd189bdd7.pdf
    • https://static.usrfiles.com/ugd/b8c837_9e6c73a0db134c0095ad4887dd126290.pdf
    • https://static.usrfiles.com/ugd/6cf0f5_15212a83cf34480b9669291bc6dab67e.pdf
    • https://static.usrfiles.com/ugd/b8c837_ed59e422ec054ee081e18de4f03e6c5c.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_off00004b60.bin
6c3fcd5aab3016bdaa5207bfcd953d9dcc11e161a6508c333752a89773f99c19
pdf-font-stream PDF embedded font (sfnt) at offset 0x4B60 5164 bytes
font_01_sfnt_off00005cfe.bin
a9d5fe774595750d8cc41248c245261acc8c4a8e5c67455158d75aea78ee24d8
pdf-font-stream PDF embedded font (sfnt) at offset 0x5CFE 13636 bytes