Malicious PDF — malware analysis report

Static analysis result for SHA-256 c893d4e1d2cec8b4…

MALICIOUS

PDF

59.2 KB Created: 2020-12-16 07:20:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: a976acf480b4a3a8ce70d9933182f64d SHA-1: 9e6ed8918b17f94e606b45757eb2fc31d542ea83 SHA-256: c893d4e1d2cec8b47f367a02e9b3bbc075d924acbb8bb330813a4c861158444b
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://trafffi.ru/wb?keyword=digimon%20world%20dusk%20rom PDF link annotation
    • https://dajexave.weebly.com/uploads/1/3/4/3/134352807/jomaverumadeke_sumamowekiv_panepokev.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381083/normal_5fb8b6f201ffe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369630/normal_5fa1d09326269.pdfIn PDF document text
    • https://xevibobi.weebly.com/uploads/1/3/4/6/134683071/gazawezigisagu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381988/normal_5fc1fb108132d.pdfIn PDF document text
    • https://zemodeviwiteg.weebly.com/uploads/1/3/4/3/134351550/rikote.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ec02f2e-d9ac-45a9-a402-2ab320b556f5/diy_deer_feeder_barrel.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6d72b0d716e027b00323d/t/5fd61bc6df2f0204c22da1d4/1607867338139/arcade_emulator_pc.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc30157c6d96458362fd63e/t/5fc836c190a4f8549d6fea75/1606956739851/lost_echo_cave_exit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00d862c6-3d58-4608-b3f9-99ca74ff113e/mugegunivozufikimikux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/213bf003-ec71-4c35-8e5d-5975d74a48d6/69130620238.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0cda3505-da69-48eb-9749-36faf156c88b/bamomavapeni.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8c94a04-3ec1-466d-9351-17a969a8c973/rurupizanodusopegadafuza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80c3e9ac-5400-4871-b52b-6c1f0b0e3967/sas_72_comfort_letter_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf16fbd6-e2c2-4ba8-878e-2c97c97205e6/range_equation_physics_formula.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_off0000ac0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC0A 5092 bytes
SHA-256: 9d4858b34064a44c6273511573465cc4d9497604f6190fa73923f8f821fe9e6a
font_01_sfnt_off0000bd5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD5C 9772 bytes
SHA-256: d80537cd101e00ecc2f13abe6cc0b73ec2537584f74397a75393a3a086dfb086

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