Malicious PDF — malware analysis report

Static analysis result for SHA-256 10195be96d6837b3…

MALICIOUS

PDF

40.2 KB Created: 2020-08-31 04:00:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aba4a0dc6472988077370799b9bf1c48 SHA-1: d79c67ad8548f17a1ba68fd3459460d948adebc2 SHA-256: 10195be96d6837b374dcabd8b6f44b011616c338facb4d837291c429e7729af6
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded URLs, a technique often used for SEO link farms or to distribute malicious content. One of the embedded URLs, 'https://ttraff.com/wix?keyword=solo+de+concours+rabaud', is flagged as a known malicious redirector. While many other URLs point to benign Shopify domains, the presence of the malicious redirector and the sheer volume of links suggest a malicious intent, likely to lure users to malicious sites or to manipulate search engine rankings.

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=solo+de+concours+rabaud
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/3876/9303/files/algebraic_structures_groups.pdf
    • https://cdn.shopify.com/s/files/1/0431/6109/2250/files/74666046991.pdf
    • https://cdn.shopify.com/s/files/1/0439/5863/2606/files/86093136757.pdf
    • https://cdn.shopify.com/s/files/1/0429/4891/9455/files/49136374617.pdf
    • https://cdn.shopify.com/s/files/1/0429/3168/3484/files/proyecto_de_tesis_ucv.pdf
    • https://static.usrfiles.com/ugd/912de2_e40c040230d645afb955d129ad36a029.pdf
    • https://static.usrfiles.com/ugd/5be868_12b73fd85b61443cb8d086b5ee2bfbc1.pdf
    • https://static.usrfiles.com/ugd/1e32c2_22a02cd6a34745c09209213d418ec40d.pdf
    • https://static.usrfiles.com/ugd/defcb2_733a889dba774837958daeec32575838.pdf
    • https://static.usrfiles.com/ugd/895bef_86b71b3a5ec845cea393bd1227d207c3.pdf
    • https://static.usrfiles.com/ugd/a107db_239e23274b214541bc053188e3fa44c3.pdf
    • https://static.usrfiles.com/ugd/04e6f9_0d03c6bdb90f4eb3935e7bdd6a8b2403.pdf
    • https://static.usrfiles.com/ugd/b8c837_d424ac2844b1474390a801dd8b290f2a.pdf
    • https://static.usrfiles.com/ugd/b8c837_d7c9aa69c6b6467197863a636d7d41a7.pdf
    • https://cdn.shopify.com/s/files/1/0432/0156/0737/files/brazil_national_football_team_uniform.pdf
    • https://cdn.shopify.com/s/files/1/0453/2790/9019/files/86920814216.pdf
    • https://cdn.shopify.com/s/files/1/0435/8779/7151/files/zukuzu.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_off00005ca2.bin
0af31b40a4728333b4ad7bf68abce2398b2413d90751a62994a0ee3761d2fb15		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CA2 5176 bytes
font_01_sfnt_off00006e35.bin
358e7afbf9aed67a198eea9d0cbe28e6d17c5a467b939560d1cbb0c7af525bcc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E35 11384 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.