Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e8ac7659b6028b5…

MALICIOUS

PDF

80.7 KB Created: 2021-03-10 23:26:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e33a36626325c400d37b2536ea37811f SHA-1: 73e7814d46710489e06d780371fb58b4ea435707 SHA-256: 2e8ac7659b6028b51dc54375e430a74b20119886b227fda33661844572e8ba6a
76 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic firing indicating an image lure linking to an SEO redirector, specifically for a 'free-download phishing' scheme. The embedded URL, https://seumenha.ru/award?keyword=weight+training+for+cyclists+ken+doyle+pdf, is the primary indicator of this malicious redirection. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • 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://seumenha.ru/award?keyword=weight+training+for+cyclists+ken+doyle+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4444102/normal_5fd635dbb2a6d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459328/normal_6040536cc6dce.pdfIn PDF document text
    • http://leftoutclub.com/20059598425mnytg.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378619/normal_5fc9ae80e2ebb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485153/normal_5fd67ec7b73c0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415748/normal_5feee4008f895.pdfIn PDF document text
    • http://openchambre.xyz/biografia_de_alejandro_magnonjg07.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408875/normal_601d1373356af.pdfIn PDF document text
    • http://frontend-developer-azaynullin.site/62708242389cu9jn.pdfIn PDF document text
    • http://pitupunum.iblogger.org/damosur.pdfIn PDF document text
    • http://lnstagram-office.com/a_world_of_ideas_10th_editionuf26h.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dogabofeki.epizy.com/amilum_manihot.pdfIn PDF document text
    • https://s3.amazonaws.com/wolina/dragon_ball_z_android_17_returns.pdfIn PDF document text
    • http://lugukejuraxa.rf.gd/kakapojetuxipugaja.pdfIn PDF document text
    • http://lalexipitu.rf.gd/what_techniques_are_used_in_behavior_therapy.pdfIn PDF document text
    • https://s3.amazonaws.com/fejififimaketo/zaxezobewadeluvetobikepan.pdfIn PDF document text
    • https://s3.amazonaws.com/rimepusox/encroach_on_crossword_answer.pdfIn PDF document text
    • http://murexerodan.rf.gd/the_police_ghost_in_the_machine_meaning.pdfIn PDF document text
    • http://judewal.rf.gd/2033989711.pdfIn PDF document text
    • https://s3.amazonaws.com/savukojubusum/battlebots_2018_episode_16.pdfIn PDF document text
    • http://vuduluxepo.epizy.com/limewotetitap.pdfIn PDF document text
    • https://s3.amazonaws.com/gofiguj/finizirim.pdfIn PDF document text
    • http://mavadapeganitew.epizy.com/73130141.pdfIn PDF document text
    • http://goxabepod.rf.gd/dovim.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fe23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE23 5596 bytes
SHA-256: 2ab62eef76f490be53d9d7dd9f3228c42cf42eedbbfe97c12ba7596e31be0d0a
font_01_sfnt_off00011148.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11148 10624 bytes
SHA-256: 5dccfaf9a117ef04ed1180aec43f740f6979a210d582836b2c2882492359cf2e

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