Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e6be2df9271cfe8…

MALICIOUS

PDF

71.3 KB Created: 2021-02-10 03:54:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 5b26e98adb53ad4b4964ed9ac10a4552 SHA-1: bfa99e0c5f52564d16218fba9364218308e39f6c SHA-256: 0e6be2df9271cfe87d7c9948871f95f26e0c9a843389ab1d94f3c8d88d59b67b
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://bologen.ru/wb?keyword=concord%20grape%20growing%20guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4463034/normal_5fd172af52572.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453105/normal_600fd27fe8f21.pdfIn PDF document text
    • https://rinuxusopav.weebly.com/uploads/1/3/4/6/134679155/8a0b4eb2ab0bd3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384037/normal_601d2c6bae8d2.pdfIn PDF document text
    • https://zapojejomelaxi.weebly.com/uploads/1/3/0/7/130775516/764e70c79.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444877/normal_5fd1fbc0ea37d.pdfIn PDF document text
    • https://xokizaneg.weebly.com/uploads/1/3/4/8/134886830/kovimitinupijasenivi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425915/normal_6010aa4d977e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491175/normal_60207da0a610a.pdfIn PDF document text
    • https://xunedoworevesa.weebly.com/uploads/1/3/1/1/131164322/5134592.pdfIn PDF document text
    • https://cdn.sqhk.co/wobimore/Zhcidhb/true_caller_id_private_number.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/wurivuve/fortnite_season_8_week_7_challenges_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagobomap/annie_are_you_ok_video.pdfIn PDF document text
    • https://s3.amazonaws.com/wexoteluwag/38880124530.pdfIn PDF document text
    • https://s3.amazonaws.com/suzixegazunow/sheets_of_hard_plastic_for_crafts.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_off0000db95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB95 5028 bytes
SHA-256: cc3e93d6fd28cae4c5e1aa84deb9bc5da5f5a1efd4310fba2ce4e4ed48d8fee2
font_01_sfnt_off0000ecd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECD1 10324 bytes
SHA-256: 16b3af6b23e5452febca311c07204ae19a5d8bf8ed0ae4567a4de02431312014