Malicious PDF — malware analysis report

Static analysis result for SHA-256 287be42fc8cd11c3…

MALICIOUS

PDF

72.9 KB Created: 2021-02-27 21:14:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 116edf97c122d1e21e7c3be8c4da4d4d SHA-1: 2fb79d5f3b8f91c7725aa8bca1e822774067c318 SHA-256: 287be42fc8cd11c318c518d33400e451ca58ea5f1842e0a4300a3ce0972102a6
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://jottigo.ru/award?keyword=what+is+a+symbol+in+trading PDF link annotation
    • http://zekaxezixil.medianewsonline.com/ipad_mini_2021_refresh.pdfIn PDF document text
    • http://kixiwogazu.sportsontheweb.net/76593214202.pdfIn PDF document text
    • http://vowufijetapiko.sportsontheweb.net/how_to_make_money_on_onlyfans_without_showing_face.pdfIn PDF document text
    • http://gisoboxizaza.mygamesonline.org/100_chart_with_missing_numbers.pdfIn PDF document text
    • https://jakilirimilibev.weebly.com/uploads/1/3/4/8/134862861/sagijagapufitaka.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/mejawiwomak/bhojpuri_bhakti_song_dj_remix_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/tugabijenovili/valentine_s_day_party_flyer_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/megodipewukitoj/les_diffrents_examens_biologiques.pdfIn PDF document text
    • https://s3.amazonaws.com/sasufufa/55572419449.pdfIn PDF document text
    • https://s3.amazonaws.com/fajixe/58612670365.pdfIn PDF document text
    • https://s3.amazonaws.com/vunizi/93179440710.pdfIn PDF document text
    • http://tivakifuzir.atwebpages.com/clculo_de_integrales_definidas_basicas.pdfIn PDF document text
    • https://s3.amazonaws.com/nitizobuv/argos_baby_monitor_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/jezekemunidup/bibelewipali.pdfIn PDF document text
    • http://sukokovevaz.atwebpages.com/polk_audio_magnifi_max_sr_soundbar_system_review.pdfIn PDF document text
    • https://s3.amazonaws.com/gonafoziguwewe/zolomijivibuberekoveki.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_off0000df63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF63 5496 bytes
SHA-256: 00f0181c3f6ef8c873ff4a03d16d8084fb52f5ae49fccf4236b93bb7cf38b1c0
font_01_sfnt_off0000f1f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1F1 10976 bytes
SHA-256: c10ff2f8f19790a7d7a695afcd3212a7ad47016bc0ff4eabfe85c87c182397df