Malicious PDF — malware analysis report

Static analysis result for SHA-256 867e071f24f5e15e…

MALICIOUS

PDF

119.4 KB Created: 2021-04-01 19:27:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6a8f9932755bf71b58d8b68f9ff280f3 SHA-1: 85860ddfd97da7e74965fbee7bcc43c4814e7a77 SHA-256: 867e071f24f5e15e44d8e4e917b7fcc163b10da3077204e2bf79d0e2de475e43
136 Risk Score

Malware Insights

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

The PDF document contains a heuristic firing for an SEO redirector link, indicating a phishing lure. The embedded URL 'https://midufefew.ru/123?utm_term=archie+tarzy+music' is the primary indicator of this malicious activity. The ML classifier and ClamAV detection strongly support the malicious nature of this PDF, likely used as a phishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://midufefew.ru/123?utm_term=archie+tarzy+music PDF link annotation
    • https://s3.amazonaws.com/tufitijinexu/how_many_calories_in_each_food.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370319/normal_5ff918d76eccc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446930/normal_600e62ce54800.pdfIn PDF document text
    • https://s3.amazonaws.com/pazerogasarinu/which_pressure_cooker_is_best_in_india.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366014/normal_6015bd43e962a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393016/normal_5fd9c4c957a3c.pdfIn PDF document text
    • https://s3.amazonaws.com/ziwuvijevo/77237534031.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482848/normal_6005774b5ec16.pdfIn PDF document text
    • https://s3.amazonaws.com/rolefosiju/11520831022.pdfIn PDF document text
    • https://s3.amazonaws.com/leteraxewe/gapawoki.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447258/normal_5fe5a5e08e96c.pdfIn PDF document text
    • http://sehq.xyz/calculus_ab_worksheet_1_on_limitsghmxp.pdfIn PDF document text
    • http://vugekowuzujed.scienceontheweb.net/farewell_my_lovely_film.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447631/normal_600c51e93edc4.pdfIn PDF document text
    • http://shop-onlain.fun/jobudabibowogufoferb9m91.pdfIn PDF document text
    • https://s3.amazonaws.com/xoferuzu/child_welfare_information_gateway_2015.pdfIn PDF document text
    • https://s3.amazonaws.com/xumakomowi/ulster_girl_guides_lorne.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390330/normal_6015d36f55331.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://supuwevul.atwebpages.com/polaris_360_pool_cleaner_owners_manual.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001473f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1473F 8324 bytes
SHA-256: f65d1ae6e5e5930e765bbb6ba6df62c64fd8b8089bf89c8352f945a24b30d386
font_01_sfnt_off000162f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x162F1 5148 bytes
SHA-256: e72f18394c4cf76bce8f9848a89c4534444dd6abd73996b100810252cfdc073d
font_02_sfnt_off0001744f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1744F 1872 bytes
SHA-256: d84d133f8be175c41a9a30ca74c194ff4552f1bd6589e6972d6457ca5359e694
font_03_sfnt_off00017d3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17D3E 16616 bytes
SHA-256: 2883f96e92ab2f12cdcaf573b8aa83cbfcd849f60f357ccd37feb81b735258a3
font_04_sfnt_off0001b00f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B00F 16884 bytes
SHA-256: bc6c42dfb6365b44170e8a0eafc9701fe406e598182aab5403e2b4a6208e9a56
font_05_sfnt_off0001c7c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C7C5 1736 bytes
SHA-256: 1648accd5638f26481c437d0e436fdfb03edab78dab75f4e73239278c8cddc19