Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5424eca3732fc2b…

MALICIOUS

PDF

38.1 KB Created: 2020-08-29 06:43:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 08ac496a64e013233b669ab715fc137e SHA-1: 2c37a71e3a84a19ccac9d852db5773d26d0b85f5 SHA-256: d5424eca3732fc2b961af0d4948eaf54df61e745f229c583987f3656f0c14095
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though partially corrupted, contains text related to 'tourist tokens' and lists several URLs, suggesting a phishing or scam attempt. The ML classifier strongly flagged this PDF as malicious, and the presence of a redirector link indicates an attempt to lead the user to a malicious site.

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.link/wix?keyword=liste+jetons+touristiques+pdf
    • https://cdn.shopify.com/s/files/1/0430/9870/1977/files/90127977901.pdf
    • https://cdn.shopify.com/s/files/1/0431/7646/0447/files/89721284449.pdf
    • https://cdn.shopify.com/s/files/1/0434/1766/5701/files/cadwallon_rpg_download.pdf
    • https://static.usrfiles.com/ugd/b8c837_794924bd2501441fa6219088ae1e30bc.pdf
    • https://static.usrfiles.com/ugd/b8c837_31fed9fbba8e458b8c90210f44e51103.pdf
    • https://static.usrfiles.com/ugd/b8c837_96711c4ee1d3412d9f57b6d255b93abe.pdf
    • https://static.usrfiles.com/ugd/b8c837_855ca7ec8356434e95e65ac1894efbc8.pdf
    • https://static.usrfiles.com/ugd/b8c837_0914cf91d1d74eb097ffca1d1712fcdc.pdf
    • https://static.usrfiles.com/ugd/b8c837_0caf9dcfc96840cc8396062fb021bf47.pdf
    • https://static.usrfiles.com/ugd/b8c837_004721e6029e43778513f5a4f5f0b2a1.pdf
    • https://cdn.shopify.com/s/files/1/0432/1509/3917/files/reading_comprehension_skills.pdf
    • https://cdn.shopify.com/s/files/1/0427/8799/5807/files/havoc_demon_hunter_8._2_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/7017/6932/files/alternaria_solani_en_tomate.pdf
    • https://cdn.shopify.com/s/files/1/0432/7889/3214/files/50091266566.pdf
    • https://cdn.shopify.com/s/files/1/0431/3251/8549/files/83796580568.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000052a7.bin
49bcdcd395a2871748bc2b860f963e470a9fe89bef93824707d7d3b3c0698d79
pdf-font-stream PDF embedded font (sfnt) at offset 0x52A7 4936 bytes
font_01_sfnt_off00006386.bin
f3d3341b34b584b7ed18ce8a9a3f44302cf1913a83ca9a9f7231c7bc7fedb3cc
pdf-font-stream PDF embedded font (sfnt) at offset 0x6386 12108 bytes