Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ef2c005377e164d…

MALICIOUS

PDF

86.5 KB Created: 2021-02-25 08:37:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 8485eed508933afa2aff532b057c9707 SHA-1: 69000bff4416070399b134258f7813dad69f7dd8 SHA-256: 7ef2c005377e164d34453a6fc4682a69f879b54b9a4e062a9ee750aefb6bdccf
214 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one specifically identified as a malicious redirector leading to a URL that appears to be a phishing lure related to cable TV issues. The heuristic firings indicate the PDF is designed to redirect users to malicious infrastructure and contains a large number of external links, suggesting a link farm or phishing campaign. The ML classifier and ClamAV detection strongly support the malicious nature of this file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/award?keyword=why+is+my+spectrum+cable+tv+not+working In PDF document text
    • https://cdn.sqhk.co/joxesinejag/jxxhfjh/baddie_captions_for_instagram_lyrics.pdfIn PDF document text
    • http://gejokakop.mygamesonline.org/22777457260.pdfIn PDF document text
    • https://garepogive.weebly.com/uploads/1/3/4/8/134871831/7265855.pdfIn PDF document text
    • https://cdn.sqhk.co/kabawamurelo/WQicxKW/jasobotol.pdfIn PDF document text
    • https://cdn.sqhk.co/dexasubu/jghjjj3/63574628817.pdfIn PDF document text
    • https://cdn.sqhk.co/kugugofawaz/ibjjohi/mogivalupasubozufof.pdfIn PDF document text
    • http://penageli.getenjoyment.net/what_causes_short_cycling_in_a_furnace.pdfIn PDF document text
    • https://cdn.sqhk.co/tovozovuzedu/ijiDWii/chicken_invaders_3_full_version_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/birofinud/V5iaohg/smart_goals_for_math_teachers_examples.pdfIn PDF document text
    • http://bikejesoxatelo.mygamesonline.org/sudutud.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/gofilafixu/59410311233.pdfIn PDF document text
    • https://s3.amazonaws.com/degisapemifa/bachpan_ki_yaade_images.pdfIn PDF document text
    • https://s3.amazonaws.com/difigomisosak/bajinopawudozigidofawew.pdfIn PDF document text
    • http://kivozusemu.atwebpages.com/wijipusiserukuzifimed.pdfIn PDF document text
    • https://s3.amazonaws.com/rujimidujek/diwali_cards_party_invitation_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/filidabut/dulelamegawupusitizor.pdfIn PDF document text
    • https://s3.amazonaws.com/nimuwet/busoxivomekipimaxipeto.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_off000114ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114EC 5820 bytes
SHA-256: abe79a1229993aede35bedd7246ca318630bec331808a9ab691c8ae37e646fad
font_01_sfnt_off000128b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128B4 10700 bytes
SHA-256: c82af49b285f56617c2e28968b5a17f96c54e348ca37d9d9e8ea267b91b28112

Open this report in the interactive analyzer, or submit your own file for analysis.