Malicious PDF — malware analysis report

Static analysis result for SHA-256 f665a2b58cef9394…

MALICIOUS

PDF

51.1 KB Created: 2020-10-13 06:43:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: 5fe201f03736fe41a57b8eb47ec45ab3 SHA-1: 6b77a76f6204380934f40b0966635fa4bd649c7c SHA-256: f665a2b58cef9394fe5c37ea8ab3bf6f15bbc2c9f2f10c061ad6c3bd7169c667
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=liftmaster+jackshaft+opener+manual In PDF document text
    • https://site-1036828.mozfiles.com/files/1036828/43011895818.pdfIn PDF document text
    • https://site-1039665.mozfiles.com/files/1039665/wekesezoritunuximosuni.pdfIn PDF document text
    • https://site-1036934.mozfiles.com/files/1036934/manone.pdfIn PDF document text
    • https://site-1038395.mozfiles.com/files/1038395/xadomux.pdfIn PDF document text
    • https://site-1037187.mozfiles.com/files/1037187/dikobavoxuna.pdfIn PDF document text
    • http://files.soundanddoctrine.com/uploads/1/3/1/4/131438692/giguremara-bevazuz-jidibaxezu.pdfIn PDF document text
    • http://zogozuw.shaun-evans.com/uploads/1/3/1/6/131607188/7906695.pdfIn PDF document text
    • http://sunalap.banyan-consulting.com/uploads/1/3/2/6/132683071/ravegapuxow.pdfIn PDF document text
    • https://site-1036675.mozfiles.com/files/1036675/35613240357.pdfIn PDF document text
    • https://site-1040981.mozfiles.com/files/1040981/33124474859.pdfIn PDF document text
    • https://site-1041693.mozfiles.com/files/1041693/87225318307.pdfIn PDF document text
    • https://site-1041491.mozfiles.com/files/1041491/mafapinewemij.pdfIn PDF document text
    • https://site-1039224.mozfiles.com/files/1039224/famefiwibamimobakite.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/1/0485/9383/0053/files/replace_command_minecraft.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6599/7472/files/34289531771.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/3718/4159/files/area_code_585_time_zone.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_off000079ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79AC 5336 bytes
SHA-256: a99be7e5d8dd8c3836cf7bdbd03d7b230545222669e7f89deb776b31e268ea3f
font_01_sfnt_off00008bab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BAB 16000 bytes
SHA-256: 2ee8becf3cb20f47af338cef954d4ad315ce31cabb0d519a3368f5b5c1816a4b