Malicious PDF — malware analysis report

Static analysis result for SHA-256 007f3448737a5ab8…

MALICIOUS

PDF

48.5 KB Created: 2020-08-30 01:44:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d1af62f5271985f2536f96a5e9535df5 SHA-1: 0d1e4c93df439b9cb6b65c346a0f5834fa27183a SHA-256: 007f3448737a5ab8d8cf9d6e7ced5bdf297759f242348b8ecefec22a8b413df8
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged for containing a malicious redirector link and a large number of embedded links, suggesting a link farm or phishing attempt. The ML classifier also strongly indicated maliciousness. The primary malicious URL identified is ttraff.com, which is likely used to redirect users to further 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.com/wix?keyword=ecuaciones+parametricas+ejemplos
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0430/2422/0321/files/potuxemi.pdf
    • https://cdn.shopify.com/s/files/1/0429/1582/3772/files/bejolukelu.pdf
    • https://cdn.shopify.com/s/files/1/0428/0002/1667/files/download_essential_chemistry_textbook_for_senior_secondary_school.pdf
    • https://cdn.shopify.com/s/files/1/0431/3923/5997/files/tikirenejefinesotuluxuz.pdf
    • https://cdn.shopify.com/s/files/1/0430/2720/2205/files/kojodidi.pdf
    • https://static.usrfiles.com/ugd/b8c837_20e9b76d67f040d0ae4bcbbd3b4ace65.pdf
    • https://static.usrfiles.com/ugd/7ff653_f928416db49944c194bc349d9ca7c1b4.pdf
    • https://static.usrfiles.com/ugd/5438e3_f8f6d4405f74436e8fd96d1a65441e9a.pdf
    • https://static.usrfiles.com/ugd/857e61_24b3aea6183446b68af180a059c14861.pdf
    • https://static.usrfiles.com/ugd/b8c837_538721c2a6c542a3807f4fcdeba1b002.pdf
    • https://static.usrfiles.com/ugd/b8c837_8ff460a1e14c4c8c9458a8e6829bc181.pdf
    • https://static.usrfiles.com/ugd/735189_3ff0331145794d2a9f9948ac16b7dc6e.pdf
    • https://static.usrfiles.com/ugd/bd5c68_0e063e9985ed4f6d9ac7569cde728f4b.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005b67.bin
87cb5f7e9f4e30d55208f97499f970ef0ab0128c392bab2643635d503b87280c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B67 4992 bytes
font_01_sfnt_off00006c44.bin
06ed243b8fa0bc95d7c74f0f9869e8d7f87b1c0443aaa546006bf9503b937cd1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C44 10980 bytes
font_02_sfnt_off0000902a.bin
25dc1b7d69cb91644f28a5d849e004c6f464f5b7ca2df743cc20f0bbd1bcfc9f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x902A 16144 bytes
font_03_sfnt_off0000a525.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA525 4324 bytes

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