Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d29dda02bc2ecf8…

MALICIOUS

PDF

46.3 KB Created: 2020-08-29 13:45:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b6a412d6aab9e353a21a46b6b9857ce6 SHA-1: d17146c16172c52a658b792f224c2c896dff65bb SHA-256: 0d29dda02bc2ecf8c393c19a2d0cef6f718dd253d17047e016dbd2571b99534d
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains a large number of embedded links, many of which point to a link farm designed to redirect users. The primary malicious URL identified is https://ttraff.ru/wix?keyword=how+to+void+dash+warframe, which is flagged as a malicious redirector. 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.ru/wix?keyword=how+to+void+dash+warframe
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/novomizobe.pdf
    • https://cdn.shopify.com/s/files/1/0431/0581/2633/files/que_es_movimiento_uniforme_en_fisica_wikipedia.pdf
    • https://cdn.shopify.com/s/files/1/0430/7245/4807/files/bimatoprosta_colirio_bula.pdf
    • https://cdn.shopify.com/s/files/1/0427/7266/0390/files/saviwis.pdf
    • https://cdn.shopify.com/s/files/1/0430/8838/0058/files/bobrick_b-_2111.pdf
    • https://cdn.shopify.com/s/files/1/0428/4927/1975/files/68738303527.pdf
    • https://static.usrfiles.com/ugd/b8c837_b86c36ca60e9492c9ac620fe6bc4e91a.pdf
    • https://static.usrfiles.com/ugd/b8c837_73d35167e3314a91b553809de6946d12.pdf
    • https://static.usrfiles.com/ugd/b8c837_951804e42c4042118ffa12fd06bb8eed.pdf
    • https://static.usrfiles.com/ugd/9e41f0_47c52c157c1a4057bfc247355b7cb2c5.pdf
    • https://static.usrfiles.com/ugd/b8c837_21299698ec9846c19e961adc3ac3e058.pdf
    • https://cdn.shopify.com/s/files/1/0466/3243/5877/files/telecharger_journal_echourouk_algeri.pdf
    • https://cdn.shopify.com/s/files/1/0433/7152/8344/files/towino.pdf
    • https://cdn.shopify.com/s/files/1/0433/3410/7286/files/gujumidetumopijib.pdf
    • https://cdn.shopify.com/s/files/1/0428/9419/6902/files/jekakujojekusimop.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_off000076c2.bin
166317cd5ec54259e64107ec8e81f4620f02fdf3f3b097df65b6fe40f6229cfe
pdf-font-stream PDF embedded font (sfnt) at offset 0x76C2 5228 bytes
font_01_sfnt_off0000887a.bin
e6f116621702c033d8a43237dbfe82a94f01bab3b6b776d55a3e2188a279ff67
pdf-font-stream PDF embedded font (sfnt) at offset 0x887A 10564 bytes