Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d5d23809f6699a2…

MALICIOUS

PDF

44.8 KB Created: 2020-08-24 07:39:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 498da5268bd0eac14ed2be10372adae6 SHA-1: c28d469a684231ac0b307a0a730ebebf2dd406cd SHA-256: 5d5d23809f6699a28f5fd414a913d8463ee4e18f487d4e1108f7e678d1e58b0f
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, many of which point to redirector infrastructure designed to obscure the final destination. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically identifies a link to 'ttraff.ru' as malicious. The document body, though heavily obfuscated, also contains a reference to this redirector URL, suggesting an attempt to lure users to a malicious site under the guise of educational content.

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=guided+math+groups+3rd+grade In PDF document text
    • http://kolup.stuarts2gabon.com/uploads/1/3/0/9/130969060/fonekutaduv-nudarujol.pdfIn PDF document text
    • http://files.louisemoss.com/uploads/1/3/1/3/131382470/ab50128145ea.pdfIn PDF document text
    • http://xakow.washingtoncountylivestock.org/uploads/1/3/0/8/130873738/sazetudagum_fesupilosol_resotobekiv.pdfIn PDF document text
    • http://files.hermanus-festivals.com/uploads/1/3/0/9/130970004/842bb774068.pdfIn PDF document text
    • http://zejalut.hylandgroup.com/uploads/1/3/0/8/130874493/69eef.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/1/0429/7395/4204/files/biotina_bula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2591/4277/files/fuxavolegowutomejuvudetix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3304/2839/files/wimibukujokoluvixu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0637/7632/files/lorap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0458/0881/2198/files/acrylic_sheet_dealers_near_me.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4668/1248/files/honeywell_thermostat_manuals.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0522/0776/files/cancer_pulmonar_epidemiologia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0821/9547/files/58091462577.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4439/7468/files/vopevimixomidoze.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 8

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_off00006fa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FA3 5536 bytes
SHA-256: e813e90806d279856b9c020c28f803e7ddf60db92128305c95c8f80e96125688
font_01_sfnt_off0000824d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x824D 10480 bytes
SHA-256: 9e26a36235059267675545addf70439266e4d0542d4205ce35bcc96f9204eff1

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