Malicious PDF — malware analysis report

Static analysis result for SHA-256 9467a30bdeded7ad…

MALICIOUS

PDF

78.8 KB Created: 2021-03-18 11:51:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: a351d8d914bd88397ddd612c160edc7c SHA-1: 0e8463b7af8e7e85aaee8ad3c2be2b65c8fe3370 SHA-256: 9467a30bdeded7add87c047b7c7eef4a0f303e5fe34b6c1158fd058c4b79b3ae
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that acts as a redirector, likely to deliver a phishing page or a second-stage payload. The document body, though partially corrupted, suggests a lure related to song lyrics to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://mezovuduw.ru/123?utm_term=westlife+songs+seasons+in+the+sun PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4495402/normal_5fe297dcee295.pdfIn PDF document text
    • http://kifenefazujiz.iblogger.org/33026627102.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404753/normal_5fe4282513224.pdfIn PDF document text
    • https://cdn.sqhk.co/baxulamuva/9hghibi/88610578925.pdfIn PDF document text
    • https://cdn.sqhk.co/bovokolel/ay5ghjb/zezutimitesetuparudamiv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491671/normal_5fc8ff422c1ae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467955/normal_6024cb1b006ee.pdfIn PDF document text
    • https://cdn.sqhk.co/tidelefuzin/lImsifT/10632931347.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381081/normal_5fcf23ddaef33.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/e8bd55f1-e309-4580-8624-1132991baa61/maytag_neptune_dryer_making_squeaking_noise.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8b4c160-14d5-47f9-b111-886e370979a5/first_alert_smoke_and_carbon_monoxide_alarm_how_to_test.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6286d4f-da27-4ae2-8da0-9d8d90b7c03e/why_does_my_hp_8610_printer_keep_going_offline.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29124060-560f-4ee5-9111-87f3bdf08cdc/lefazo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de40831d-6b10-4949-b358-7223ad99f361/recaro_performance_sport_car_seat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/363a3c2c-55a3-4fc8-a741-8d06bc200eca/red_letter_bible_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba4f5ac8-6692-4883-823c-f1bbf386f7bf/jogefunisixi.pdfIn PDF document text
    • http://tutazex.rf.gd/application_display_templates_liferay_7.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1cdd7a89-1074-4709-8505-c59b1c6183fd/xemobuzusidarufomi.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_off0000f7b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7B1 4948 bytes
SHA-256: 39c4d7e6f8a7b38f1b717be5798cd9bb7760b4b826089374c88738645070abf1
font_01_sfnt_off0001089b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1089B 11112 bytes
SHA-256: c188e90e30aea5d6bb37be4aaa1a7669d9da5493266b9f9dc43399bd550866ac

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