Malicious PDF — malware analysis report

Static analysis result for SHA-256 762ccceaa51c6ee1…

MALICIOUS

PDF

37.9 KB Created: 2020-08-20 04:50:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 486e59de4b96d16d74a71d0d3b1cafa6 SHA-1: e3b085b0ab0daad7c39478766113116ddfe65cc2 SHA-256: 762ccceaa51c6ee141b4ec59f538cede4bcea8a6e7445d0ebe192d421fe5a90c
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a malicious redirector link pointing to 'ttraff.com', which is flagged as malicious. It also presents a large number of links, many pointing to benign Shopify URLs, suggesting a link farm or SEO manipulation tactic. The presence of a 'download button' heuristic further supports a lure-based attack. While no scripts were extracted, the PDF structure and malicious URL indicate an attempt to redirect the user to a harmful site, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/pify?keyword=african+queen+remix+by+2face+video
    • http://files.westsideuta.org/uploads/1/3/0/9/130969809/biroxagepakit_lirifiviwereg_luxupatisanojag.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0448/4002/6273/files/electric_renewable_energy_systems.pdf
    • https://cdn.shopify.com/s/files/1/0439/8543/6830/files/munni_badnaam_remix_song.pdf
    • https://cdn.shopify.com/s/files/1/0437/0720/3739/files/agni_natchathiram_full_movie_in_tamilrockers.pdf
    • https://cdn.shopify.com/s/files/1/0441/4518/0824/files/duchess_of_malfi.pdf
    • https://cdn.shopify.com/s/files/1/0437/7686/8510/files/define_appropriation_account.pdf
    • https://cdn.shopify.com/s/files/1/0431/9726/8128/files/16102748766.pdf
    • https://cdn.shopify.com/s/files/1/0433/5704/4890/files/dasudofa.pdf
    • https://cdn.shopify.com/s/files/1/0440/6856/9238/files/les_acariens_du_sol.pdf
    • https://cdn.shopify.com/s/files/1/0446/6016/2713/files/memopizapajelezusi.pdf
    • https://cdn.shopify.com/s/files/1/0429/5829/1093/files/vilexawitifoxi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000048a9.bin
590ff10fdfd47bb29cafe221a43116d53390e8ff75ec662e0529458139b06384		 pdf-font-stream PDF embedded font (sfnt) at offset 0x48A9 5376 bytes
font_01_sfnt_off00005ad4.bin
cb84a91cbe972a8d265e5a2229e9573915a432da21b7af88104fcec629ec6447		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AD4 10024 bytes
font_02_sfnt_off00007d18.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D18 4324 bytes

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