Malicious PDF — malware analysis report

Static analysis result for SHA-256 235ebbe0e9e0733a…

MALICIOUS

PDF

42.6 KB Created: 2020-08-15 06:32:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 417d76651c8bee22b21bd9fc5caa9088 SHA-1: 9262e34b3250147064ea8d875e13c5910507a98b SHA-256: 235ebbe0e9e0733a67b4c839bf48fe7be275af4b9473faa7716b1b2cdf8f0361
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is likely used to obscure the final malicious destination. The document body, though heavily obfuscated, contains the text 'Former accountant general of the federation' and the URL that triggered the malicious redirector heuristic, suggesting a lure to trick users into clicking through the link farm.

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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=former+accountant+general+of+the+federation In PDF document text
    • http://files.bohemianstudios.net/uploads/1/3/0/7/130739202/zawumos.pdfIn PDF document text
    • http://files.brecksvillecogop.org/uploads/1/3/0/7/130775490/sugumizoj_nojetemogitix_jodewato_dozumafedob.pdfIn PDF document text
    • http://jaxofubu.eriniwata.com/uploads/1/3/1/4/131453284/nofivuxuxasigaf.pdfIn PDF document text
    • http://files.elysianbotanica.org/uploads/1/3/2/6/132681392/wojaz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3199/4280/files/jitajakumetine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0138/6920/files/gaboxowol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0737/6542/files/5290096284.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/2593/5005/files/nifigunakuperazetuxupinip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8852/7013/files/kopaxebavudimekese.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/25364865142.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7990/9017/files/dabizuwokapu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4959/9651/files/2936221180.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4677/3660/files/33245913907.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1420/7134/files/96473761002.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/4016/7320/files/didarase.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9005/9176/files/31715609663.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1877/8781/files/36670152298.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1423/4016/files/kadurowaraxis.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005b3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B3F 5096 bytes
SHA-256: 8646182ce4bb8805d3022ba652e7cf630e336014d231690a6744d19c43c3d15c
font_01_sfnt_off00006c5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C5C 10124 bytes
SHA-256: 863585f8dd99b373de19506d3df9579c5134360c62048b99e84a80e155717814
font_02_sfnt_off00008ee5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EE5 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333