Malicious PDF — malware analysis report

Static analysis result for SHA-256 02dab1e0dfdb514f…

MALICIOUS

PDF

65.7 KB Created: 2021-01-23 22:40:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 80234c143b3aac23711e7dc5dcc819b2 SHA-1: db43f35534a5968944eafb267caf46b7824e677b SHA-256: 02dab1e0dfdb514f8c7b4f088be7436a5a383d7718075cfcc3d6966689657ca1
254 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
  • 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.
  • 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.
  • 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://crophysi.ru/wb?keyword=business%20international%20major In PDF document text
    • https://cdn.sqhk.co/lafuwexale/vieExid/dunkin_donuts_near_me_menu.pdfIn PDF document text
    • https://cdn.sqhk.co/tigixexaxi/6IJTcij/16716998814.pdfIn PDF document text
    • https://cdn.sqhk.co/kapideto/dKyHvky/82380222433.pdfIn PDF document text
    • https://cdn.sqhk.co/bibolaned/jeiegcJ/lexonalewinuwipifurerutom.pdfIn PDF document text
    • https://wazaxilam.weebly.com/uploads/1/3/4/7/134726650/2473030.pdfIn PDF document text
    • https://cdn.sqhk.co/jabuvilir/w9kjehf/nonanipotekofukotekula.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/besafefaf/new_york_state_attorney_general_complaint_form.pdfIn PDF document text
    • https://s3.amazonaws.com/dudigonifu/arcgis_10._1_free_for_windows_10.pdfIn PDF document text
    • https://s3.amazonaws.com/nisiwanolom/jutat.pdfIn PDF document text
    • https://s3.amazonaws.com/gonafoziguwewe/24138020512.pdfIn PDF document text
    • https://s3.amazonaws.com/defipedibe/poea_standard_employment_contract.pdfIn PDF document text
    • https://s3.amazonaws.com/tufitijinexu/38497411183.pdfIn PDF document text
    • https://s3.amazonaws.com/batiku/70216489442.pdfIn PDF document text
    • https://s3.amazonaws.com/jepinebawo/lutopusidojizogiju.pdfIn PDF document text
    • https://s3.amazonaws.com/getizar/32086223039.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_off0000c5af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5AF 4956 bytes
SHA-256: f8a85e84d20426c6dbcacc82b046fff9052654ea681ab3290f750f8932478ab6
font_01_sfnt_off0000d674.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD674 10556 bytes
SHA-256: 75184b2dc324a5e12c8cdfdb0827cf43e409746af043714b452938b7d70d38c6

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