Malicious PDF — malware analysis report

Static analysis result for SHA-256 83d119945b9b153a…

MALICIOUS

PDF

67.4 KB Created: 2021-03-06 17:46:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 41c58c701acfeb48f9b10df0d80c8c80 SHA-1: b7c7bc3cfbd3e2df6cd45d0d666fe2f25fa7167d SHA-256: 83d119945b9b153a28d616b830d51cf03177a650e3a4d68d659d80bab423489c
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 6

  • 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.
  • 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://maypoin.ru/wix?keyword=holt+mcdougal+algebra+2+chapter+5+test+answers PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4493610/normal_5fdd6e68b7035.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368489/normal_5ff856b051e72.pdfIn PDF document text
    • https://cdn.sqhk.co/besogevipadi/YhahFib/bloomberg_keyboard_yellow_keys.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491436/normal_5ff0242d220cc.pdfIn PDF document text
    • http://kebenoda.scienceontheweb.net/99221229484.pdfIn PDF document text
    • https://sifijaxamop.weebly.com/uploads/1/3/4/3/134332722/weraf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389821/normal_5ff273eb97d76.pdfIn PDF document text
    • https://cdn.sqhk.co/xeposetuge/jjdrtsQ/29812709312.pdfIn PDF document text
    • http://mukidulutovig.iblogger.org/rabumugixofavuxapazin.pdfIn PDF document text
    • https://rifijilaguselud.weebly.com/uploads/1/3/4/8/134846829/nixopavurexibulazo.pdfIn PDF document text
    • https://cdn.sqhk.co/pesuxitum/I9jjC6o/easy_cross_stitch_kits_for_beginners.pdfIn PDF document text
    • http://beviluxenumiliv.mywebcommunity.org/operating_system_concepts_9th_solution_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/luwagoma/Ml4jbzG/ted_baker_glasses_manufacturer.pdfIn PDF document text
    • https://cdn.sqhk.co/zijigemeworu/Shihdp3/car_running_board_repair_cost.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/betefowubevat/zodekozekiwonobilofu.pdfIn PDF document text
    • http://dolanuvusipegu.myartsonline.com/19300474542.pdfIn PDF document text
    • https://s3.amazonaws.com/zabevog/what_is_a_bleeding_bowl.pdfIn PDF document text
    • https://s3.amazonaws.com/bodajaku/nedofenosofitizolabipi.pdfIn PDF document text
    • http://repafow.epizy.com/62512382391.pdfIn PDF document text
    • https://s3.amazonaws.com/dadupawo/1708194678.pdfIn PDF document text
    • https://s3.amazonaws.com/wipotegadodorek/is_samsung_compatible_with_verizon.pdfIn PDF document text
    • http://sujotoginejo.rf.gd/fojovugovupedofogixoviri.pdfIn PDF document text
    • http://galapeb.epizy.com/aruba_clearpass_hardware_datasheet.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_off0000ca3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA3D 5936 bytes
SHA-256: 3351ddd9ae88a59c9a62b33bff176a073bd1e13a732247624ffbd22395974d45
font_01_sfnt_off0000de4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE4E 9772 bytes
SHA-256: eb20c63e5b54a614c525d19de036b8e69458ac0b046d9ec624cd88ba44e5f7e3

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