Malicious PDF — malware analysis report

Static analysis result for SHA-256 74699ecf0aa6677f…

MALICIOUS

PDF

45.8 KB Created: 2020-10-04 03:19:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: f40b642da13401e252d74a2221e9eaa3 SHA-1: f755ebff606af9a2f82a24d8383cd796ffb62d0b SHA-256: 74699ecf0aa6677f6aa99b3b2c552d9e1afb3b9b8006e3917691c9a5389e33b2
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://gettraff.ru/strik?keyword=mgf+to+pdf In PDF document text
    • http://files.enviroleblanc.com/uploads/1/3/1/3/131380901/8c9ec.pdfIn PDF document text
    • http://kukivawip.emmausbaseball.com/uploads/1/3/2/8/132816091/wisowilusakigofo.pdfIn PDF document text
    • http://gibab.smokymountainsummer.com/uploads/1/3/2/3/132302984/lobofij-dogudeje.pdfIn PDF document text
    • https://site-1039404.mozfiles.com/files/1039404/juzanisosaledavaped.pdfIn PDF document text
    • https://site-1036649.mozfiles.com/files/1036649/kuladupol.pdfIn PDF document text
    • https://site-1038317.mozfiles.com/files/1038317/mosakofafetusipozozeti.pdfIn PDF document text
    • https://site-1036920.mozfiles.com/files/1036920/84695408047.pdfIn PDF document text
    • https://site-1036760.mozfiles.com/files/1036760/27218161450.pdfIn PDF document text
    • https://site-1037101.mozfiles.com/files/1037101/faxunakipenepamobo.pdfIn PDF document text
    • https://site-1041301.mozfiles.com/files/1041301/wugojofepufesariwojivepo.pdfIn PDF document text
    • https://site-1041281.mozfiles.com/files/1041281/ziwisubaxelekijuwofuto.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/0041/6414/files/blue_moon_bass_tabs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9129/6413/files/2004_toyota_corolla_manual_transmission_rebuild_kit.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_off00007672.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7672 4700 bytes
SHA-256: c2114ef08abe896e6f692749dfae7d5bb15c941ab3db16cef2aacf1ff09fdfc7
font_01_sfnt_off0000869d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x869D 10760 bytes
SHA-256: 977daafeae80541be8cbe55fa8f15caa2ab734324deba3e14595a709868f1052