Malicious PDF — malware analysis report

Static analysis result for SHA-256 7de8e2bd1b14a372…

MALICIOUS

PDF

75.1 KB Created: 2021-02-27 02:41:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: e7934d7060eff859caf6a9dd5d81b4ae SHA-1: a23babd5c7f0c891f96e110d209c9c08c3effb15 SHA-256: 7de8e2bd1b14a372588d2854cd3898eea6c640203bd9a0f540220b8be5fc556c
236 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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/123?utm_term=how+do+i+get+the+radio+code+for+my+honda+ridgeline PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4407986/normal_601393570761f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445550/normal_602205e7cd00c.pdfIn PDF document text
    • https://losewilim.weebly.com/uploads/1/3/4/8/134854933/tekasamuseromu-bosurasu-bizeridupu.pdfIn PDF document text
    • https://buparemekixa.weebly.com/uploads/1/3/0/7/130739227/9784792.pdfIn PDF document text
    • https://mixozanuzobese.weebly.com/uploads/1/3/5/4/135400893/2813938.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409606/normal_5fd2ab9114dd2.pdfIn PDF document text
    • https://nowiwadigomu.weebly.com/uploads/1/3/4/0/134018048/6c2e964.pdfIn PDF document text
    • https://dopakujovifoba.weebly.com/uploads/1/3/0/7/130739833/busodane.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465142/normal_5fdcd153098fa.pdfIn PDF document text
    • https://siwufofewexiv.weebly.com/uploads/1/3/5/3/135329456/mesonigikuni.pdfIn PDF document text
    • https://disadoxamegipu.weebly.com/uploads/1/3/4/5/134527150/4837901.pdfIn PDF document text
    • https://woxigixekamut.weebly.com/uploads/1/3/0/7/130739530/gaxuzixugosam.pdfIn PDF document text
    • https://pufenenuboz.weebly.com/uploads/1/3/0/7/130738511/bcc2e5ca2c41f71.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/nunakixuma/framework7_sheet_modal.pdfIn PDF document text
    • https://s3.amazonaws.com/jujojomojemiz/administrao_publica_conceito.pdfIn PDF document text
    • https://s3.amazonaws.com/wukevirenesu/how_to_help_your_body_heal_hpv.pdfIn PDF document text
    • https://s3.amazonaws.com/xukonakefules/bmw_328i_troubleshooting_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/fekife/lion_alcolmeter_500_service_manual.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_off0000e7b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7B6 5412 bytes
SHA-256: c25cc4abf1428199151e2baab20c5ef3898e99b68505c37030d581681670eec8
font_01_sfnt_off0000fa0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA0C 11140 bytes
SHA-256: c27fe03ab32c3e91723a36569bdc1efaaa6b6875b077e6a07ab34250d20747f8

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