Malicious PDF — malware analysis report

Static analysis result for SHA-256 7428df3838bdf876…

MALICIOUS

PDF

41.9 KB Created: 2020-08-09 01:07:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 11b6ba7c6de90ef6d29813d28606a7b8 SHA-1: e4980330398516a458479725c4e3d5ed178a386d SHA-256: 7428df3838bdf876c71699050efe728006e764862b9384fd58cead4a2357c3fb
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many of which point to a redirector service identified as malicious. The document body, though heavily obfuscated, contains text and URLs that suggest a lure related to 'sheet music' which redirects to a malicious URL. This indicates an attempt to trick users into visiting a compromised site, likely for further exploitation or phishing.

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=coldplay+yellow+sheet+music+pdf In PDF document text
    • http://files.gerhardsnewsblog.com/uploads/1/3/1/4/131454049/wologop_wazixebonamunon_lesaxategep_zogot.pdfIn PDF document text
    • http://files.gregglohman.com/uploads/1/3/0/9/130969150/vareb.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/1/0430/8716/7637/files/cauliflower_recipes_in_tamil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/6778469529.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/1240/1815/files/tabeer_ur_roya.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4323/2661/files/articles_about_values_education.pdfIn PDF document text
    • http://files.herb-and-dew.square.site/uploads/1/3/1/8/131871597/5075157.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5969/2191/files/lomuberata.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5078/5173/files/naruto_shippuden_episode_283_english_dubbed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2921/7958/files/35033484881.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6992/1688/files/tulazufudelinajoxuwav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0281/4876/files/bevozitegejutivazujeruxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2318/7614/files/15704572711.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2104/0789/files/student_learning_outcomes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wefudebavisizaku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7243/7910/files/74113696440.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1849/2824/files/pimipijololojukufix.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 6

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_off00006612.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6612 5400 bytes
SHA-256: 45be622ee5be0b10d17f39f40f7f81c735424e3a923b999b8d94e0f198dedc17
font_01_sfnt_off00007861.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7861 10060 bytes
SHA-256: 6308bf9b49c7a65c53bbe03a642f5465f7246ebc5112ae7afd3de95d724ea7f2

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