Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b58cf5ce650783d…

MALICIOUS

PDF

89.4 KB Created: 2021-03-05 04:18:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 803282ea7a46259a89f440a26180bb12 SHA-1: 5c892550f8630330398afdcd418aeb6df244332a SHA-256: 9b58cf5ce650783df5e9ae2304676528ae0cceef20c9a2b099090ecf0eb348f6
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://leonvi.ru/wix?keyword=tipos+de+pericos+verdes PDF link annotation
    • https://lojopozubog.weebly.com/uploads/1/3/1/6/131606756/9646023.pdfIn PDF document text
    • https://pafazemewo.weebly.com/uploads/1/3/4/5/134517711/5692440.pdfIn PDF document text
    • https://tawugeri.weebly.com/uploads/1/3/4/7/134774142/9828930.pdfIn PDF document text
    • http://servicesforsupport.com/kootek_42_pieces_cake_decorating_kit_at_amazon53nft.pdfIn PDF document text
    • http://walolexokesufa.sportsontheweb.net/60756435208.pdfIn PDF document text
    • http://contentmedialiteracy.com/suvugikopiwr7og.pdfIn PDF document text
    • http://fotubobuwenapu.scienceontheweb.net/is_call_me_by_your_name_on_netflix_germany.pdfIn PDF document text
    • http://kipokefurur.mygamesonline.org/internal_reflux_still_plans.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/gekojulog/welch_allyn_otoscope_25020a_manual.pdfIn PDF document text
    • https://2a4c341d-9af7-4f89-b48a-1b926ad6ced7.filesusr.com/ugd/dd6616_bb627b022ab44e6cb1d3a0094350e7cb.pdf?index=trueIn PDF document text
    • https://e028ba52-6c86-493e-86b7-fecf7cd1c3eb.filesusr.com/ugd/bcb9fd_ee88beaa89b144b788332ad90cf14ab9.pdf?index=trueIn PDF document text
    • https://acfcda0b-1795-4b40-aedc-9a0bc13047ce.filesusr.com/ugd/89c6ad_015387cc29864779a5e53d05de1b12ca.pdf?index=trueIn PDF document text
    • https://0e01c86c-6ad9-43de-bc04-b8819f410213.filesusr.com/ugd/73c254_77abae49c546401d93dd1fa06bb2c175.pdf?index=trueIn PDF document text
    • https://d8acad56-eb9a-42d1-a06c-a695c5b02328.filesusr.com/ugd/0ad6c7_02635b5c61ad4fc1a457a3156223d536.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gowebabuxogiro/19456970320.pdfIn PDF document text
    • https://s3.amazonaws.com/bejokazemur/absolute_value_worksheets_doc.pdfIn PDF document text
    • https://s3.amazonaws.com/rozebofukixus/raximidapi.pdfIn PDF document text
    • https://s3.amazonaws.com/nunakixuma/planimetria_catastale_non_conforme_proposta_di_acquisto.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_off0001227c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1227C 4836 bytes
SHA-256: 8e8bd293f267c3d094c20c17e28efb55e236f80273321a9090663549efe74861
font_01_sfnt_off00013305.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13305 11668 bytes
SHA-256: 2aebe68911e28b34be7053b3c15c4d670c8df4d61e288afcb0f2d4ab6eabd545

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