Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ea5ce51a167ff45…

MALICIOUS

PDF

72.7 KB Created: 2020-12-13 21:42:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: b5b1f4e9d1913637f012b20a01eb5682 SHA-1: e6e33e9fcd2a34db7f8c084fd788b991ed3b36b7 SHA-256: 6ea5ce51a167ff4599f2cf1b0be8ab4e4308d3747bff10815cdf64838fdd27fa
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a malicious intent to manipulate search engine results or redirect users to potentially harmful sites. The ClamAV detection and ML classifier further support its malicious nature. While no scripts were explicitly extracted, the presence of external URLs and the nature of the heuristics indicate a phishing or content distribution attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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://traffine.ru/aws?utm_term=bully+game++free+for+ios PDF link annotation
    • https://fulipevaxavu.weebly.com/uploads/1/3/2/6/132695351/napofujewub.pdfIn PDF document text
    • https://xojisige.weebly.com/uploads/1/3/1/6/131637148/f6b9193d1f016.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc787b65c272238a81aab02/t/5fc98c5d81b71b40858daa7d/1607044191115/commander_collection_green_pre_order_amazon.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc294961452f90b7fefeff3/t/5fc5781e6457125654f63656/1606776862969/how_far_is_200_meters_in_blocks.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc29ae5bdb33045eecd1eec/t/5fd232708ba64b78df6082bc/1607610994267/truck_wallpaper_android_hd_download.pdfIn PDF document text
    • https://s3.amazonaws.com/widetunipet/albertsons_grocery_store_job_application.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4cde0085bf90c0e162532/t/5fca3dbeee6dcf7e363d74b9/1607089609816/vofisodos.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc123632e537a05ef0a8a98/t/5fcdf950eb18547f4ba8b787/1607334224655/topps_champions_league_cards_messi.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2cae0c30a162e0c5ec24a/t/5fc650ba3c02f22b9de3e236/1606832314619/racing_wheels_for_ps4.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d4752bbd7406580625ec/t/5fc28049173fb5383bf3dafe/1606582346440/isabella_bird_community_school_council.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbffe9d5687f52b6b7c161f/t/5fcf2749509e863c682ab9a1/1607411533107/korikusima.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe247f5147b14804fc2947/1606296704009/kofubexokigusaboxema.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_off0000e051.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE051 5240 bytes
SHA-256: 84bf9f3ac42142383c4833939094118094264784c7893d4d60fc71b5b9d69e80
font_01_sfnt_off0000f21d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF21D 10636 bytes
SHA-256: 14f47c29c76002cb5dfaa7bf48c071f0f770e6e1c3cce26b59faa8ddbadc4cfe

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