Malicious PDF — malware analysis report

Static analysis result for SHA-256 88c52263289ac427…

MALICIOUS

PDF

42.5 KB Created: 2020-08-19 02:13:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 59833d8a8d5f45582bbcd1e3a43912cd SHA-1: 5dfbe6ef186259e0c1b55894c9db637af2acc146 SHA-256: 88c52263289ac4272559a634c0c421b74b1e15ff1045305fe484cd1c5b7faaf1
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.ru) designed to lead users to a link farm. The document body text, though garbled, includes a title related to academic exercises, suggesting a lure to trick users into clicking the malicious links. 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=barycentre+de+deux+points+exercices+corrig%25C3%25A9s+pdf In PDF document text
    • http://files.st-abbs-market.com/uploads/1/3/1/4/131483097/rujuv.pdfIn PDF document text
    • http://lusuna.belleminks.com/uploads/1/3/0/7/130776043/f8db0.pdfIn PDF document text
    • http://dakukox.gustafjackson.com/uploads/1/3/1/4/131482975/6c0a5798b8b0922.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/1/0433/7981/8661/files/tafuverokolorad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1926/2363/files/james_s_walker_physics_5th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9268/0605/files/berberina_lemma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4026/8711/files/subogegumalakemodukob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5335/1066/files/20064372653.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4729/6922/files/kupefigotuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5351/3880/files/masezitukobujepaja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3459/0888/files/99383921385.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7294/5304/files/what_does_adv._stand_for.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5889/6802/files/93589336949.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4736/0414/files/apple_keyboard_symbols.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2853/6731/files/brothers_grimm_short_stories.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8706/9348/files/vupexukuvikubax.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

Related samples 3

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006202.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6202 5652 bytes
SHA-256: f431939af833681db7abb1bbf751d4cfdf6ec118d7eb8f44d9f894f6c5fe8b24
font_01_sfnt_off0000751e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x751E 11736 bytes
SHA-256: be137756b320555a44e81c8d011009c2f7d2ba30eaa9e1bbdb3864190a22e68f

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