Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfe48344d7edfb70…

MALICIOUS

PDF

80.9 KB Created: 2021-03-20 10:55:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: fbf6807a59b67b25debffd515b41ec4d SHA-1: bed4b64273fbaffe5e5d6b3dbb8cfa0ecfff395e SHA-256: dfe48344d7edfb70b2a290a19e37eae22f1070249446243b0b0f195ede1d2096
162 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The ML classifier also flagged the PDF with high confidence. The embedded URL likely serves as a lure to download a malicious payload, aligning with a phishing or social engineering attack pattern. No scripts were extracted, but the presence of a malicious URL is a strong indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=cbse+sample+papers+for+class+10+2020+pdf+free+download In PDF document text
    • https://cdn.sqhk.co/botonerepap/ibHgejj/cute_captions_for_pics_with_dogs.pdfIn PDF document text
    • http://tanemazijafawin.medianewsonline.com/89383133220.pdfIn PDF document text
    • https://cdn.sqhk.co/durotula/hnkhege/47302582023.pdfIn PDF document text
    • https://cdn.sqhk.co/gazegarov/geK9GJt/vagufomezaronizizez.pdfIn PDF document text
    • https://cdn.sqhk.co/wogirujut/Mjhhfji/78491221423.pdfIn PDF document text
    • http://giwosoto.sportsontheweb.net/jasalajojo.pdfIn PDF document text
    • https://cdn.sqhk.co/xurunesijud/jinjim3/telecharger_la_boite_a_merveille_gratuit.pdfIn PDF document text
    • https://cdn.sqhk.co/dewavasese/ahhghgi/nascar_finish_line_rules.pdfIn PDF document text
    • http://mutujejeturuduf.medianewsonline.com/42781566816.pdfIn PDF document text
    • https://cdn.sqhk.co/demexadol/6fgjhei/48016969689.pdfIn PDF document text
    • https://cdn.sqhk.co/nakunadubux/Hjawhd4/great_farms_to_visit.pdfIn PDF document text
    • https://cdn.sqhk.co/janimivaxo/ghjeYeL/clash_of_clans_base_th10_link.pdfIn PDF document text
    • http://xifasiv.getenjoyment.net/administrao_de_produo_e_operaes_correa.pdfIn PDF document text
    • https://cdn.sqhk.co/xumefotebe/jgjgieH/metal_slug_6_atomiswave.pdfIn PDF document text
    • http://sevezor.scienceontheweb.net/20731833848.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/nuvukivaxiren/definicion_coliformes_totales.pdfIn PDF document text
    • https://s3.amazonaws.com/nitajosasa/distinguishable_permutation_problems_with_solutions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/vudivuzakal/ziwepinajegabomevetol.pdfIn PDF document text
    • https://s3.amazonaws.com/sosupejuxofedo/approaches_of_public_administration.pdfIn PDF document text
    • https://s3.amazonaws.com/zafijukopa/hunger_games_book_age_rating_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/mozedijiz/96726895975.pdfIn PDF document text
    • http://jowawaba.atwebpages.com/statistical_software.pdfIn PDF document text
    • http://dupepoge.onlinewebshop.net/metodos_anticonceptivos_de_barrera.pdfIn PDF document text
    • https://s3.amazonaws.com/sinadi/magic_cap_video.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_off0000fbe2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBE2 5764 bytes
SHA-256: fad9f56f472a45e47aaf9f6a262f891b5d331528b97fe3d3a88d6c57f2235e16
font_01_sfnt_off00010f7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F7D 11444 bytes
SHA-256: 1f7708c3b3856f19aef94b1e7a631415eeaf6ef1b1e3bdcf49eab24f077e30c7

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