Malicious PDF — malware analysis report

Static analysis result for SHA-256 8670da00c05ec540…

MALICIOUS

PDF

32.8 KB Created: 2020-08-30 17:53:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4f71c2dcaa70fd51aa6e5834f75e05f9 SHA-1: 1b77843602d99d0dc7527b5910c1586e76007828 SHA-256: 8670da00c05ec5404e9b3842ab235d037101fa417f984231f17766b0a7193095
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of embedded links, many of which point to a redirector URL. The primary malicious URL identified is https://ttraff.com/wix?keyword=manual+honda+tornado+xr+250, which is flagged as malicious. The document's structure suggests it is part of a link farm designed to drive traffic to malicious infrastructure.

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=manual+honda+tornado+xr+250
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b8c837_19e102540730479fa24403e4e216ae7d.pdf
    • https://static.usrfiles.com/ugd/e33828_86d6bf43c4cf420abf46e313fb068a8e.pdf
    • https://static.usrfiles.com/ugd/8d57bd_17ee77f4d78f4955870d39e659de708e.pdf
    • https://static.usrfiles.com/ugd/b8c837_5849e1fc3eb24e5c8dc7a639d01e8667.pdf
    • https://static.usrfiles.com/ugd/7ea8bb_f99f7aab3a714104b29d901b54028dde.pdf
    • https://static.usrfiles.com/ugd/de3d83_5215b772e1e54e7688c1e46dc8c9ff9d.pdf
    • https://static.usrfiles.com/ugd/ca32a8_261eed1619d548808f2a55754a31611c.pdf
    • https://static.usrfiles.com/ugd/cac9e4_27b2fd9d4c344e92917e724565799f57.pdf
    • https://static.usrfiles.com/ugd/b8c837_35431618468f40e199a66c015d758c6d.pdf
    • https://static.usrfiles.com/ugd/d3758e_2ae9a3c95bad48b6bb8db1fbd001a638.pdf
    • https://static.usrfiles.com/ugd/b8c837_8f4a2c07e0b840fabca3136754149fbb.pdf
    • https://static.usrfiles.com/ugd/822ecd_5a86d5b651bf4f8eb5a823f917fb63b2.pdf
    • https://static.usrfiles.com/ugd/5d2cf3_e694c9a8db094db890c14ccf5c3d9fe6.pdf
    • https://static.usrfiles.com/ugd/3ab5ed_86859317e149444a8a365d5434ef86b9.pdf
    • https://static.usrfiles.com/ugd/b8c837_a6e59eb4dbb846f589b48d741d55e5f8.pdf
    • https://static.usrfiles.com/ugd/54fa57_ecacd658188b44a1bb0879e92e7b313d.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_off00004586.bin
8764d085a202534ed3a347c21ff3cfba032ad6401c3a65a6568a7f21b484e4d4
pdf-font-stream PDF embedded font (sfnt) at offset 0x4586 5204 bytes
font_01_sfnt_off00005737.bin
04887b040b791d2f4f66b7e7ac56efc0692bb1cabdfa9a18ebc3d4b80d28dab3
pdf-font-stream PDF embedded font (sfnt) at offset 0x5737 9340 bytes