Malicious PDF — malware analysis report

Static analysis result for SHA-256 911711aaa964f191…

MALICIOUS

PDF

72.7 KB Created: 2021-02-15 06:24:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 30de23bca493466a30ad8acaf1b1a0a8 SHA-1: 9fac3489edbc5746a4f0f4af3d1d1095a10a77e6 SHA-256: 911711aaa964f19156ce875bf8981cd91dfecdab5245b34cdf1f65cf0c0924cd
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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://bologen.ru/wix?keyword=predicting+products+worksheet+key PDF link annotation
    • https://cdn.sqhk.co/gigepiwej/hbEf2Ph/gupor.pdfIn PDF document text
    • http://sadovik.me/venuwulaxejepegalowog6ksfs.pdfIn PDF document text
    • https://cdn.sqhk.co/kikolibub/jchjhjn/gonodaxojovezaxexazakiji.pdfIn PDF document text
    • https://cdn.sqhk.co/viforoge/6ggheji/zunelotelererobarililab.pdfIn PDF document text
    • https://cdn.sqhk.co/tarudifirew/fjbhiYL/average_cost_of_health_insurance_per_employee.pdfIn PDF document text
    • https://cdn.sqhk.co/pubisifibuj/WvkUjji/9799539094.pdfIn PDF document text
    • https://cdn.sqhk.co/vagekoxes/jZjbiil/o2_e-_top-_up_swipe_card.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412378/normal_5fcda073ab7ac.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479932/normal_5fc7c6add962f.pdfIn PDF document text
    • http://antonioit.space/69109904342o5u9u.pdfIn PDF document text
    • https://cdn.sqhk.co/baxajufim/4jawB5o/zovisowifavamoxutiguwem.pdfIn PDF document text
    • http://allwoman.site/fawigewejatagm2gwu.pdfIn PDF document text
    • http://gobigs.space/likenurokifaxurifamaliouvl2.pdfIn PDF document text
    • https://cdn.sqhk.co/migiwepi/AOhblwQ/50456781508.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e094.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE094 5352 bytes
SHA-256: 9cce53afaab0b5ab921f5cbdeff3a3c8b95675a08b55f7119c6bb89334c7a40b
font_01_sfnt_off0000f2e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2E1 10268 bytes
SHA-256: 1e06762b6883f4d4e1393d817131fd110df4a62e5b5573df2d1957b87693a428