Malicious PDF — malware analysis report

Static analysis result for SHA-256 63d51bcf787c4acc…

MALICIOUS

PDF

48.9 KB Created: 2020-10-10 15:49:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 7e03a78459cf57532caee15990d15e4d SHA-1: d12d4c2508d7a9b481409c73816d4de1a9c95e1c SHA-256: 63d51bcf787c4acc3a762cf39bbdb05ab48d2eb7f9c0119bab3f5adcd81cf8e7
184 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.
  • 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.
  • 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://ggtraff.ru/pify?keyword=maytag+bravos+xl+washer+parts In PDF document text
    • http://files.stallionrep.com/uploads/1/3/1/4/131454093/galupinobupugev.pdfIn PDF document text
    • http://files.sparklabels.com/uploads/1/3/2/8/132814900/cd6ec35c1af85be.pdfIn PDF document text
    • http://files.teamgunit.com/uploads/1/3/0/7/130739978/larofofuporokekax.pdfIn PDF document text
    • https://site-1038788.mozfiles.com/files/1038788/78765928565.pdfIn PDF document text
    • https://site-1036958.mozfiles.com/files/1036958/wirixezopa.pdfIn PDF document text
    • https://site-1039999.mozfiles.com/files/1039999/tugunixunuvib.pdfIn PDF document text
    • https://site-1043530.mozfiles.com/files/1043530/95287676190.pdfIn PDF document text
    • https://site-1043647.mozfiles.com/files/1043647/10738803518.pdfIn PDF document text
    • https://site-1038890.mozfiles.com/files/1038890/7497678387.pdfIn PDF document text
    • https://site-1044018.mozfiles.com/files/1044018/zeriziwomexowu.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/22782c6c-fe87-4516-957f-ff5618c7cd1b/27527997843.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7830e833-cb3c-4d41-a556-fa966a32cbda/73565222720.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/979ac7b7-ebc6-4fe9-aeda-2ff476ed8ebc/42007000041.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67e42327-148e-4f53-b536-9a03b0b535cb/gapamabilara.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b742f0da-8d0c-4f0d-a6e8-f7b4ea5070b9/jejevawikifegef.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_off00007f62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F62 5548 bytes
SHA-256: 0a87ef54b2caf136fc8ebea2584c0b9fd77a286ea2bf8ea183d80ca49c4c57a2
font_01_sfnt_off00009267.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9267 10672 bytes
SHA-256: 95e05c7fdda521a0fc4f810d8cef367e393f6c68134fff9ca58b4eef34f30b50

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