Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2f3774782d9ffe7…

MALICIOUS

PDF

72.9 KB Created: 2021-03-01 07:35:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: b3f89df43293703b31a74ef708e26bb3 SHA-1: 1e9ea9d4c256d528fe554a7c629ebd485e14cdb0 SHA-256: e2f3774782d9ffe7c9a5db700b5da66f58fca0ffe56a942d628f3809dbb95131
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://zajinet.ru/wix?keyword=hawaii+driver%2527s+license+manual+answers PDF link annotation
    • http://zobegodu.iblogger.org/farufevitodovizigene.pdfIn PDF document text
    • http://trellos.fun/tamilrockers_adanga_maru_movie_2018pgyxm.pdfIn PDF document text
    • https://potezevaledu.weebly.com/uploads/1/3/1/4/131406960/4361307.pdfIn PDF document text
    • https://fowuwulavo.weebly.com/uploads/1/3/4/7/134754099/215229.pdfIn PDF document text
    • http://kupivse.xyz/weather_report_for_camlachie_ontariobkhp2.pdfIn PDF document text
    • http://bokazisenu.22web.org/58676165107.pdfIn PDF document text
    • http://nowatora.22web.org/catanzaro_informa_cronaca_incidente_stradale.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/welanisowari/grupos_de_risco_covid_oms.pdfIn PDF document text
    • http://mafikaxavetubod.rf.gd/rode_ntg_2_vs_videomic_pro.pdfIn PDF document text
    • http://nibejodawugizex.rf.gd/chundari_vave_sreya_ringtone.pdfIn PDF document text
    • https://s3.amazonaws.com/sedowedi/superantispyware_for_android_tablet.pdfIn PDF document text
    • http://vulewibof.epizy.com/76752087780.pdfIn PDF document text
    • https://s3.amazonaws.com/wogikokuzotaxa/anime_remix_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/gozilum/11420004640.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_off0000e1bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1BF 5232 bytes
SHA-256: 5eea3ebdfee2d8e8204b10fe97a66c5b3a404c2203a520525388f32e74778cdf
font_01_sfnt_off0000f397.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF397 10252 bytes
SHA-256: d40a567f4d94ee30e5db2fbd135c7626ed4614d2ef3983cbb8fdf646f727eae6