Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f1e9873817a0250…

MALICIOUS

PDF

48.5 KB Created: 2020-08-09 05:23:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c748f4de7e31daf9493f179f7df5a823 SHA-1: a30c802e74abd21635a8f8de99fcb173457ccb0d SHA-256: 3f1e9873817a0250bc62dca7f534876fe1d6d7b3df3fb143af281e0815aa5a15
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded links, many pointing to Shopify domains, which are part of a link farm designed to appear as legitimate downloadable documents. One critical heuristic indicates a direct link to a known malicious redirector, 'ttraff.ru', which is likely used to serve further malicious content. The document body, though heavily obfuscated, contains text related to 'contract agreement pdf download', reinforcing the lure.

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=contract+agreement+pdf+download In PDF document text
    • http://files.mycasasale.ca/uploads/1/3/1/6/131606121/3044729.pdfIn PDF document text
    • http://files.nosterud.com/uploads/1/3/1/3/131379699/jabuvitixabigen.pdfIn PDF document text
    • http://sikapa.cineforgemedia.com/uploads/1/3/0/9/130969723/2833521.pdfIn PDF document text
    • http://files.mullanroadproject.com/uploads/1/3/1/6/131607321/jodigebuguz-kuzufo-febama-limukoroporo.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/1/0432/4684/6107/files/foxipoxiwevufor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2757/0596/files/duwugewujidufizet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2255/7082/files/wordly_wise_book_8_lesson_9.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5366/1858/files/jenga_drinking_game_diy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6758/8252/files/jonway_yy250t_service_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2815/9381/files/94936751561.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6015/8873/files/sugar_beans_farming_in_zimbabwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5479/1832/files/descargar_calendario_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2857/6416/files/back_pain_exercises_nhs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9156/6493/files/definition_of_political_party.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0204/4316/files/42576506762.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86593634255.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 4

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_off000080ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80EA 5292 bytes
SHA-256: f58f8e043ae8157f357ad0dd6a77b27f9ffd1a7bd8eef28f735ad30e6fa48153
font_01_sfnt_off000092e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92E4 9984 bytes
SHA-256: ec2d3a77552ae4665c053c459788e7f05ac9652a10bad9414d0c25295b895e85

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