Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c8a7e2e67c14b64…

MALICIOUS

PDF

42.2 KB Created: 2020-08-25 00:48:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 2245bbcf5a8078963bedeceae0dc37a3 SHA-1: 7aa37a2a2ad640ca58d8892faff2f0e6e21de8e1 SHA-256: 7c8a7e2e67c14b64db310e789c0e83f0abe8196fd9a03527b6414a5a69ad2314
194 Risk Score

Malware Insights

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

This PDF file contains numerous links, many pointing to a redirector infrastructure known for malicious activity. The document body, though heavily obfuscated, contains a URL that appears to be part of a phishing lure, attempting to trick users into downloading further malicious content. The ML classifier strongly indicated maliciousness, and the presence of a redirector link confirms a high likelihood of malicious intent.

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.com/pify?keyword=fractured+but+whole+classes+guide In PDF document text
    • http://nobof.eclecticcolour.com/uploads/1/3/1/1/131164250/26758.pdfIn PDF document text
    • http://files.whiskersnwagspet.com/uploads/1/3/1/4/131409526/9838292.pdfIn PDF document text
    • http://fodum.ewtechteam.com/uploads/1/3/0/8/130813669/00c206dd.pdfIn PDF document text
    • http://files.rafaphotographyart.com/uploads/1/3/0/7/130776343/8056693.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/1/0429/1395/6006/files/98076501464.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3966/0954/files/metropolitan_opera_rush_tickets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1381/6995/files/mejojowijex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5196/6873/files/windows_10_command_line_cheat_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4040/7701/files/verizezuferegepuvavi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7078/2614/files/facebook_advertentie_formaat_foto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/toniseko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5080/3099/files/cetacean_poem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5376/9126/files/38490437351.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3472/8853/files/defensa_personal_militar_rusa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3795/7023/files/26861521721.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 5

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_off000066fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66FB 5388 bytes
SHA-256: b66025db51d94439818c2a70994a482387ef50db408a6ea58a031e6f92806e66
font_01_sfnt_off00007954.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7954 10176 bytes
SHA-256: 378929b53f3bef8bd3f822cdc16beafdc96cb4fbcac72b00a059b7a8284b780f

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