Malicious PDF — malware analysis report

Static analysis result for SHA-256 71a3d30cf78230f1…

MALICIOUS

PDF

77.4 KB Created: 2021-04-04 03:10:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 661faf274903ed4e605a345ad5e5493f SHA-1: d309c4ab5a03ed6fc4805fd106f78139eab4e7b5 SHA-256: 71a3d30cf78230f1369c5524d59f8c114cfd1cc2adef624af656941dd4ac11bd
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a lure for accounting homework answers, and heuristic analysis indicates it's an SEO redirector for phishing. ClamAV and ML classifiers strongly identify this PDF as a phishing trojan. The embedded URL points to a suspicious domain, likely serving the malicious payload.

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://resalured.ru/wix?keyword=cengage+accounting+chapter+4+homework+answers PDF link annotation
    • https://s3.amazonaws.com/falevi/formation_anesthesie_loco_regionale.pdfIn PDF document text
    • http://siwivelijutore.medianewsonline.com/wills_eye_hospital_rating.pdfIn PDF document text
    • http://valuburikodajad.medianewsonline.com/2012_camaro_repair_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/dikomavomem/sowumorigikuxu.pdfIn PDF document text
    • http://e-devletturkiyeaidatsistemimgovtr.com/xakifaminugafilegawufelp24u.pdfIn PDF document text
    • http://fivadoguna.medianewsonline.com/tapijubopunixa.pdfIn PDF document text
    • http://testersairf.xyz/55335043172xsfg4.pdfIn PDF document text
    • http://oneshops.space/introduction_to_programming_in_pythonzp8qb.pdfIn PDF document text
    • https://s3.amazonaws.com/tevigotu/poemsia_lang_leav_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/mukutud/midavet.pdfIn PDF document text
    • https://s3.amazonaws.com/mexijegedakol/camtasia_studio_8_tutorial.pdfIn PDF document text
    • https://s3.amazonaws.com/ximupuv/29581728446.pdfIn PDF document text
    • http://ottics.ru/playboy_collectors_association_playboy_magazine_price_guideqrzfu.pdfIn PDF document text
    • http://selozufuwadapuw.66ghz.com/family_cartoon_pictures.pdfIn PDF document text
    • https://s3.amazonaws.com/wotodedaruzuk/girl_birthday_invitations_templates_free.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zikinevubebera.epizy.com/71674068553.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9e271db-9e22-4298-8db5-1839564953a8/sig_sauer_p220_legion_carry_sao.pdfIn PDF document text
    • http://pupagerirawax.myartsonline.com/oratory_skills.pdfIn PDF document text
    • http://kukalofawofami.epizy.com/enlaces_covalentes_ejemplos.pdfIn PDF document text
    • http://suxikikafib.epizy.com/abeo_maximum_performance_socks.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f359bb5-e66c-433f-a948-3997098288d3/nobunajubodadinuroxaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef0a01ca-1d48-4a4b-b861-6176466dbcbc/how_to_identify_rocks_igneous_sedimentary_and_metamorphic.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 7

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_off0000ec06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC06 5464 bytes
SHA-256: 9794340eb2e7f7de3673fff36c13525ca6665725e6be6cdc0c63763f629bd274
font_01_sfnt_off0000fe8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE8C 12400 bytes
SHA-256: f039130ccfbf6261885572ab7fab53a5da3583910520a3566664c5ad68859ac3

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