Malicious PDF — malware analysis report

Static analysis result for SHA-256 41f916c640f2386e…

MALICIOUS

PDF

45.0 KB Created: 2020-08-25 16:39:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3fefceeeaa028adb83af048946a4a6df SHA-1: 99da69d6587976e5b11808ae0bf81cf0b53aea1a SHA-256: 41f916c640f2386eb85396ab91a55163dc7bdab35566baa8c97ece906cfa2a24
194 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=bones+tv+show+episode+guide+season+7'. This URL is presented within the document body, disguised as a TV show episode guide, indicating a social engineering lure. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many of which point to Shopify domains hosting PDF files. No scripts were extracted from this sample.

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=bones+tv+show+episode+guide+season+7 In PDF document text
    • http://files.istitutomondoitaliano.org/uploads/1/3/1/0/131070379/2427500.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/1/0440/0077/2246/files/calendario_laboral_comunidad_de_madrid_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3170/8316/files/pubulolud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5591/3879/files/coulombic_attraction_worksheet_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7608/4117/files/papers_please_mods.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2724/1879/files/muxepebapebinegukowufo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6912/9372/files/76979176034.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3957/9546/files/cours_fusion_absorption.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5180/9949/files/mazure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4686/8891/files/dewenosuxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3692/5342/files/widusuwazetat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5950/3519/files/juzixu.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 1

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_off0000637b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x637B 5256 bytes
SHA-256: ed890358b100015d4cf2a02cfec0753ef0152d6b014be606a9fa3a6b175878d2
font_01_sfnt_off00007579.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7579 10420 bytes
SHA-256: b79e0224af6097f1002d2cadd57896be6c5c7af3a739df4d2c31b9572eac7a5a
font_02_sfnt_off0000991e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x991E 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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