Malicious PDF — malware analysis report

Static analysis result for SHA-256 43ca259dd60674c1…

MALICIOUS

PDF

69.7 KB Created: 2021-02-28 15:19:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d1d4dc0e9380f834876bdf47a52d071d SHA-1: 852021db301eb23b113d4611dcf1c53ed55789ae SHA-256: 43ca259dd60674c149235f8250c191fd010998ace83f3a5a4931174688935898
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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.
  • 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://gimoguvi.ru/wix?keyword=pbs+vocab+3.3+and+3.4+crossword+answers PDF link annotation
    • http://wersita.space/givebimariziwoxifanusal5pr3o.pdfIn PDF document text
    • https://netevidogewe.weebly.com/uploads/1/3/4/7/134715311/rerojom-rakifisitovujuw.pdfIn PDF document text
    • https://simalono.weebly.com/uploads/1/3/1/8/131856945/dacd15b352.pdfIn PDF document text
    • https://biwomewiwuxe.weebly.com/uploads/1/3/4/1/134131409/d49d0057f58a2ef.pdfIn PDF document text
    • http://numulul.mygamesonline.org/87333847806.pdfIn PDF document text
    • https://poxovoxi.weebly.com/uploads/1/3/5/3/135398301/rusazasulojorazotu.pdfIn PDF document text
    • http://lirinevewafa.mypressonline.com/pagolexiwufinugopamomafa.pdfIn PDF document text
    • https://gafepodaxo.weebly.com/uploads/1/3/4/6/134606739/jasoremesugudal-lunosimor-putomexuli-zigolimagib.pdfIn PDF document text
    • http://vuvulusigi.scienceontheweb.net/19327693282.pdfIn PDF document text
    • https://firedilem.weebly.com/uploads/1/3/1/4/131407958/nugoxepoxolodufazixu.pdfIn PDF document text
    • https://beluxavin.weebly.com/uploads/1/3/4/5/134507718/4346866.pdfIn PDF document text
    • http://kipokefurur.mygamesonline.org/85214453530.pdfIn PDF document text
    • http://terakusinuw.mypressonline.com/beretta_m9_holster_safariland.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xozeb/crossword_clues_answers_free.pdfIn PDF document text
    • http://timadulikojig.rf.gd/82210564054.pdfIn PDF document text
    • https://s3.amazonaws.com/votawawo/anbanavan_asaradhavan_adangadhavan_2017_full_movie.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_off0000d419.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD419 5476 bytes
SHA-256: 64cbaee37dbed13a33705b34be7ae8bcf8acce462824aa5992c1924cb8735733
font_01_sfnt_off0000e6e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6E6 10136 bytes
SHA-256: 59606f7608a410ef59a3001bbcbc55bd81ae65679eb84dd1c9e9b27182eb2050