Malicious PDF — malware analysis report

Static analysis result for SHA-256 82988c565f5d604a…

MALICIOUS

PDF

77.1 KB Created: 2021-03-22 16:06:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a5386b49a9dcafc222ed35ce9b0e2e9a SHA-1: 9edcee66a0f6a26cc04ae87b1f61565ad002526b SHA-256: 82988c565f5d604accfe590b706088b1b2273f39ce4773d97bf139df7e01b4dc
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains heuristics indicating it is a phishing lure, using an image to redirect users to a malicious website. The ClamAV detection and ML classifier further support its malicious nature. The embedded URLs suggest an attempt to deliver a second-stage payload or phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://zajinet.ru/wix?keyword=rna+worksheet+answers PDF link annotation
    • http://hytri.com/54870541802h2pp.pdfIn PDF document text
    • http://de-bewertung-id2842384.icu/rexusewuloviripunejome7f8ug.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488135/normal_601f0b92b1cdb.pdfIn PDF document text
    • https://s3.amazonaws.com/bisiku/competitiveness_report_world_economic_forum.pdfIn PDF document text
    • http://begetus11ppz.xyz/7473442362nxsq5.pdfIn PDF document text
    • https://s3.amazonaws.com/woberiz/gaali_chirugaali_song_dj_mix.pdfIn PDF document text
    • https://s3.amazonaws.com/jadudusujuje/rimugufopewotava.pdfIn PDF document text
    • http://prizinsta365.website/how_do_you_fix_the_incline_on_a_proform_treadmillqrd5e.pdfIn PDF document text
    • https://s3.amazonaws.com/boxujetanonikuv/one_word_question_answers_related_computer.pdfIn PDF document text
    • http://creditpm.com/fevunekotufi5laeg.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371004/normal_5fe3f5b2099e9.pdfIn PDF document text
    • https://s3.amazonaws.com/zifozujiwi/89891641422.pdfIn PDF document text
    • https://s3.amazonaws.com/resisuna/adders_and_subtractors_in_digital_electronics.pdfIn PDF document text
    • http://kyrgyztours.com/9484740393dx7wu.pdfIn PDF document text
    • http://reduslimitaly.website/vezeworenonuzuzoe68ux.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455670/normal_6007bbc5438d2.pdfIn PDF document text
    • http://chebsvet.ru/980430576966yesr.pdfIn PDF document text
    • https://s3.amazonaws.com/pegozegi/aeroporto_malpensa_numero_telefono_informazioni.pdfIn PDF document text
    • http://vidclips.design/544281884230emvi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/bbba65f5-9c0a-4197-a872-68545da815b7/stopping_by_woods_on_a_snowy_evening_appreciation.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1cf89c9c-b678-4976-88d3-1d5d03b15a81/5_languages_of_love_test_for_couples.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cdf50316-5143-4bd9-96e1-1492d3c2b249/alla_prima_tattoo_ink_review.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 8

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_off0000f22f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF22F 4904 bytes
SHA-256: 4cf5056aae38d594afa2bbd3a9774271e7b868229cbd41ae76cf1eda07833c59
font_01_sfnt_off000102f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102F0 10544 bytes
SHA-256: 0361cfcdc46fd45101d4d06173524e806615784396ba9f18b85baa4eae75d5d0

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