Malicious PDF — malware analysis report

Static analysis result for SHA-256 dab493b2d129200f…

MALICIOUS

PDF

75.4 KB Created: 2021-03-07 18:54:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 6ebe0d52a98b927760d46e4c1c2b72a1 SHA-1: a925dcf1b57144a363c7f29c895538d56b59c4f2 SHA-256: dab493b2d129200f821c244b31a5de8e84ebcd287c494aae306a09ae3a3f10c7
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a heuristic indicating it's a lure for free downloads, redirecting to a suspicious URL. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded URL is likely used to deliver a second-stage payload or conduct phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://kuzutuzo.ru/strik?utm_term=how+to+boost+calorie+in+foods PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4410989/normal_601b4713ea2ef.pdfIn PDF document text
    • http://lekezoreg.22web.org/83255372544.pdfIn PDF document text
    • http://tusapet.iblogger.org/babasaheb_ambedkar_image.pdfIn PDF document text
    • http://boribonabone.mypressonline.com/sat_test_scores_meaning.pdfIn PDF document text
    • http://wukosemat.22web.org/charpentier_menuisier_formation_laval.pdfIn PDF document text
    • https://cdn.sqhk.co/vafodagusun/phbuxjf/baby_numbers_learn_to_count.pdfIn PDF document text
    • https://cdn.sqhk.co/mugegiduveb/j1qBzpF/at_t_u-_verse_modem_setup_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/vuwipabobatu/jijcyjg/15710591694.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391340/normal_5fdfdcccb9632.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sulijik.rf.gd/haymarket_train_station_platforms.pdfIn PDF document text
    • https://s3.amazonaws.com/jivuxo/82446768981.pdfIn PDF document text
    • http://giwetigimibe.epizy.com/pijazirufemorineje.pdfIn PDF document text
    • https://s3.amazonaws.com/juduk/luvirowesu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85eafe30-ed34-49c2-bef5-0fa29dbd4ba5/bariwagugipusisala.pdfIn PDF document text
    • http://zupitatip.atwebpages.com/lolidijesatidodedi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f33ca8c-0952-4048-93a7-202c0bf72b0e/what_are_the_different_types_of_health_information_systems.pdfIn PDF document text
    • https://s3.amazonaws.com/daselex/67270642191.pdfIn PDF document text
    • https://s3.amazonaws.com/zetituri/82566378952.pdfIn PDF document text
    • https://s3.amazonaws.com/xomepixo/76903798679.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_off0000e803.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE803 5208 bytes
SHA-256: 7b0b29dd027710c6f80a72e9e7c1897047678685444136553cd36d803448d150
font_01_sfnt_off0000f9d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9D6 11324 bytes
SHA-256: dc20bbc75cba41f73c60ff414a8318fcedfb241c61018dc18662b2a11ab1ca69

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