Malicious PDF — malware analysis report

Static analysis result for SHA-256 464ade9800a033e2…

MALICIOUS

PDF

42.2 KB Created: 2020-10-09 11:19:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 74ee2b329be8ab32a9a73ef2aa172418 SHA-1: d661d944ab47f7871b8344d2517c35af2a436d4d SHA-256: 464ade9800a033e281edabe5e262f4f5db0b8d1293ab85974f71add57dd9331b
164 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://ttraff.club/pify?keyword=cell+transport+graphic+organizer+answer+key In PDF document text
    • https://site-1038780.mozfiles.com/files/1038780/59360411201.pdfIn PDF document text
    • https://site-1042927.mozfiles.com/files/1042927/74829032986.pdfIn PDF document text
    • https://site-1038460.mozfiles.com/files/1038460/wokavoluxakujoz.pdfIn PDF document text
    • https://site-1038375.mozfiles.com/files/1038375/77890979827.pdfIn PDF document text
    • https://site-1039873.mozfiles.com/files/1039873/jarajage.pdfIn PDF document text
    • https://site-1036815.mozfiles.com/files/1036815/24241730022.pdfIn PDF document text
    • https://site-1042633.mozfiles.com/files/1042633/xavafifig.pdfIn PDF document text
    • https://site-1039566.mozfiles.com/files/1039566/mosoluninujaxozajix.pdfIn PDF document text
    • http://files.faith-nexus.net/uploads/1/3/0/8/130813654/vorodasawezati.pdfIn PDF document text
    • http://jotut.thorpenessandaldringhamheritagegroup.co.uk/uploads/1/3/1/8/131856222/db4d28e47ac.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/33800bac-c654-450a-9474-46bea4be183d/balusibodisudewebalibake.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72c3d226-c4a9-4c17-a462-09a892937fd4/varowulefolaxobidodos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16a7d88f-6130-4805-bbb6-764f2e2bf23a/45683783870.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1239105-9abf-4a72-91f3-521d39336ce5/diguzosumijezi.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006627.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6627 5408 bytes
SHA-256: 4eed4e9ac26e8aade75310f6511593798e714d628c54d9d9e756e3813925960c
font_01_sfnt_off000078a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78A2 10316 bytes
SHA-256: 876a9325bf8018d24d1671f8ba861fc81c6397282b39af0e5c0f2dcb384b034a

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