Malicious PDF — malware analysis report

Static analysis result for SHA-256 16dd99eeca576705…

MALICIOUS

PDF

62.5 KB Created: 2021-02-15 07:30:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 75a25474288d30cbfeda31ed47ed7a24 SHA-1: 10ed5b76ad2d56380851ee447043454dbeea452e SHA-256: 16dd99eeca5767056b0195ee19d9a6b60875d5c8d285342096db7780da2172a5
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://druttle.ru/wix?keyword=delonghi+oil+filled+heater+manual PDF link annotation
    • http://wagugekewa.22web.org/saxazubajig.pdfIn PDF document text
    • https://nefixesuxu.weebly.com/uploads/1/3/0/9/130969456/nubev-vapaga-virarudifizegol.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451929/normal_6013c1d14ccef.pdfIn PDF document text
    • http://kogiwonewaveg.iblogger.org/wibixol.pdfIn PDF document text
    • http://tinudikironuvak.22web.org/nafekonixibiba.pdfIn PDF document text
    • http://xekuluw.iblogger.org/audacity_app_per_android.pdfIn PDF document text
    • http://dobomasinuraz.iblogger.org/37755957559.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://juvejuvikanu.epizy.com/rojedalogub.pdfIn PDF document text
    • http://rezofegiwuw.rf.gd/toned.pdfIn PDF document text
    • http://wufajin.rf.gd/60104759536.pdfIn PDF document text
    • http://domawodevanaga.rf.gd/70422064363.pdfIn PDF document text
    • http://lobaman.epizy.com/50210324717.pdfIn PDF document text
    • http://wadogoded.epizy.com/feral_druid_dps_guide_wotlk.pdfIn PDF document text
    • http://fegidil.rf.gd/59682735436.pdfIn PDF document text
    • http://gogewarixisude.epizy.com/difference_between_isometric_and_orthographic_projection.pdfIn PDF document text
    • http://vigopul.epizy.com/jopib.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_off0000bb5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB5E 5144 bytes
SHA-256: d16d9dd341699f7c45ad3396b026fb756dab93c78d76355447495c5af0f3d92f
font_01_sfnt_off0000ccb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCB2 9524 bytes
SHA-256: 25fdea8ac7234df384a7b2db6fd897365a16ddd22b32443ebd048ce4e9695b4e