Malicious PDF — malware analysis report

Static analysis result for SHA-256 00be3ae4099f12b8…

MALICIOUS

PDF

42.6 KB Created: 2020-10-15 02:10:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: a1961f883fb77e9ba78440e03f7b677b SHA-1: d446e5434964c31a06695e53e1d893dcfe61ce3b SHA-256: 00be3ae4099f12b89a4f4771b0752d8dc875295d0b8271ce20901d91c0a97743
184 Risk Score

Malware Insights

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

This PDF file contains numerous links, many pointing to disposable hosting, and one critical link to a known malicious redirector. The document body, though heavily obfuscated, contains the malicious URL and other links that appear to be part of an SEO spam or phishing campaign. The primary malicious URL is https://gettraff.ru/123?keyword=tilings+and+patterns+second+edition+pdf.

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://gettraff.ru/123?keyword=tilings+and+patterns+second+edition+pdf In PDF document text
    • https://site-1038703.mozfiles.com/files/1038703/47368522953.pdfIn PDF document text
    • https://site-1044297.mozfiles.com/files/1044297/84719480632.pdfIn PDF document text
    • https://site-1043239.mozfiles.com/files/1043239/fugowimoruni.pdfIn PDF document text
    • https://site-1038810.mozfiles.com/files/1038810/91380775159.pdfIn PDF document text
    • https://site-1043032.mozfiles.com/files/1043032/tejetapunetub.pdfIn PDF document text
    • https://vuzevarezevarot.weebly.com/uploads/1/3/0/7/130740461/kisesajotikevezi.pdfIn PDF document text
    • https://rewemekekebaz.weebly.com/uploads/1/3/1/4/131406535/4202832.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/zanazanekoxel.pdfIn PDF document text
    • https://nukevokisoget.weebly.com/uploads/1/3/2/7/132711970/ridiwiwuwud_bojobopasotute_goreg.pdfIn PDF document text
    • https://pobezewimo.weebly.com/uploads/1/3/2/6/132681951/fapobe-tutirikalekaluj-loxamu-pobusoke.pdfIn PDF document text
    • https://zesopupejilit.weebly.com/uploads/1/3/0/7/130738861/992572.pdfIn PDF document text
    • https://vozunutav.weebly.com/uploads/1/3/0/9/130969695/4630030.pdfIn PDF document text
    • https://mupibidegupek.weebly.com/uploads/1/3/0/8/130874042/8130356.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366351/normal_5f8730bacdc0f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367302/normal_5f877f1706544.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366011/normal_5f877f98a84da.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367920/normal_5f876f323995b.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/297c0.pdfIn PDF document text
    • https://sevanilab.weebly.com/uploads/1/3/1/4/131437268/2851860.pdfIn PDF document text
    • https://pobezewimo.weebly.com/uploads/1/3/2/6/132681951/48794f1.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/kadijamiruvinugeno.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/c5801b27-d47e-4237-be8e-0e1b831d119b/74627806659.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d90c16c-e458-42fe-bf2d-454c14b22c2f/83517023739.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/33dbb43e-57c1-4409-8004-32391cf54d51/munivitovapuwajepafejo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/30c8d6b0-b4c9-4bc0-9a07-f53993467eb2/monawaruvowavozimixuve.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_off00006838.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6838 5272 bytes
SHA-256: 5b07e6d9ef8a5c26536882cd5a2dd9d33043a37a4f6f04f2a03a2d58d255103a
font_01_sfnt_off00007a2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A2D 10088 bytes
SHA-256: 34b20f1a9d7173705af61e08728ab7303a98690a0bfc0fab890db746c80b4e71