Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e5f8baee52a562d…

MALICIOUS

PDF

39.8 KB Created: 2020-08-08 09:11:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6c0c623264a16b68263b635f447176cc SHA-1: d47138ea39ed304bfe51c7223d5792489869221d SHA-256: 7e5f8baee52a562da70754b2f2c03884fc6e93056c350c8def6ae016779d1d6a
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service (ttraff.ru) that is associated with malicious activity. The document body, though heavily obfuscated, contains the same redirector URL, suggesting an attempt to trick users into downloading potentially malicious content. The ML classifier also strongly indicated maliciousness.

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.ru/pify?keyword=physiology+practical+book+ak+jain+pdf In PDF document text
    • http://files.narokgames.com/uploads/1/3/1/3/131380469/9d868a.pdfIn PDF document text
    • http://files.womenartistsreaction.com/uploads/1/3/2/3/132302863/8d22be5d98d153.pdfIn PDF document text
    • http://files.hopeshouseworks.ca/uploads/1/3/0/7/130776486/julel_gigabotelebux_defaturuwipar_dudinazufe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9569/4239/files/23664298080.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4606/7605/files/77612852695.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3876/7264/files/moboteri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/9896/0026/files/3208_cat_engine_parts_diagram.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8043/3302/files/72017369294.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2439/2087/files/gta_3_cheats_pc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0709/0581/files/5965419566.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0118/3397/files/32792980908.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5654/6467/files/sonofebideridupikike.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000045df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x45DF 5800 bytes
SHA-256: 7980ee17727ae54796f11b873ac1d3ad58dcac5bd6343f3bcc9d4d6298bb3801
font_01_sfnt_off000059a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59A6 9872 bytes
SHA-256: 6891ccece1e1cf8e356e86a8a79cf5d269a518eaac6a358ae7d4595f3ceca413
font_02_sfnt_off00007b9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B9C 16164 bytes
SHA-256: c41fc46809d2260d2d1a821cef6bb00dae560fdbad380da94a93f29d012df54e

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