Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f3f446c4ee4f957…

MALICIOUS

PDF

40.7 KB Created: 2020-08-15 19:59:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 000a3782e7d8dca24d6b5c54f3d73e22 SHA-1: 80f53ce01d4acaa871fd1c735167e0dfe4e06ccf SHA-256: 4f3f446c4ee4f957a15ac9ac0af6d41cbf60abed2a4c8c269702542f20561302
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wb?keyword=pyes%20gov%20ng%20files%20pyes%20guarantor%20form%20pdf'. This URL is presented within the document body, disguised as a government form, to entice users to click. The PDF also contains a link farm heuristic, indicating a large number of outbound links, with the first being 'https://cdn.shopify.com/s/files/1/0435/4398/6327/files/gitovo.pdf'. The ML classifier strongly supports the malicious nature of this PDF.

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/wb?keyword=pyes%20gov%20ng%20files%20pyes%20guarantor%20form%20pdf In PDF document text
    • http://files.globalwarmingcompany.com/uploads/1/3/1/4/131407274/milavow-kadodu-rumanatuxo.pdfIn PDF document text
    • http://files.ellipseatlantic.com/uploads/1/3/1/0/131070173/mibezogez.pdfIn PDF document text
    • http://files.digitalindy.biz/uploads/1/3/0/8/130814226/sejovuwewemolune.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/1/0435/4398/6327/files/gitovo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4926/8886/files/60502245177.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9798/0056/files/fazurawatorewelobobi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7796/7776/files/66714420525.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2717/6344/files/logical_operators_and_truth_tables.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/2735/4015/files/cheerios_box_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5258/7415/files/57419539422.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/baxumedufimoval.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8980/3941/files/18199915979.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7379/8306/files/provinsi_bengkulu_dalam_angka_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6482/8838/files/39809245152.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1961/5901/files/makinet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7125/0336/files/types_of_functions_maths.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_off00006026.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6026 5524 bytes
SHA-256: 82faf8b3c614798d3f5f99d69d848a065465952b1be0b6fd05213ea80923dec9
font_01_sfnt_off000072e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72E3 10288 bytes
SHA-256: 871516f36dcc84ca93d33493681b949de26d774354c1be17704f2a8b703c0ea4

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