Malicious PDF — malware analysis report

Static analysis result for SHA-256 471ca1765b211b89…

MALICIOUS

PDF

72.2 KB Created: 2021-02-24 23:48:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 5ad869b966600c1b8219a6b2eb5781a5 SHA-1: 9ae6785049564d5a4eea98476d9b4aba50548ed0 SHA-256: 471ca1765b211b89aad57f839203aad47d10f35fca5cc021a20f2e793952da87
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/wix?keyword=affidavit+of+support+sample+letter+for+student+visa PDF link annotation
    • https://nasavizar.weebly.com/uploads/1/3/5/3/135322571/sozasazanabap_tukufubusip_biraja_vinerozi.pdfIn PDF document text
    • http://gadetebes.sportsontheweb.net/zijatudanowi.pdfIn PDF document text
    • https://dizarikovir.weebly.com/uploads/1/3/4/6/134627165/3677455.pdfIn PDF document text
    • http://nizavevorupuj.mywebcommunity.org/cuantos_cm_hay_en_un_metro_cubico.pdfIn PDF document text
    • https://fofifakexetag.weebly.com/uploads/1/3/4/3/134345684/2787895.pdfIn PDF document text
    • http://tijudozi.scienceontheweb.net/hp_deskjet_2546r_wifi_setup.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://girogabunuxumu.rf.gd/aur_ahista_kijiye_baatein_ming.pdfIn PDF document text
    • http://gujomodezeroj.epizy.com/guided_missile_destroyer_vs_frigate.pdfIn PDF document text
    • https://s3.amazonaws.com/sixenogafopoj/character_study_worksheet_ks2.pdfIn PDF document text
    • https://s3.amazonaws.com/miledu/free_editable_monthly_newsletter_templates_for_teachers.pdfIn PDF document text
    • http://towupew.epizy.com/gokarifanixomojufesevajo.pdfIn PDF document text
    • https://s3.amazonaws.com/farezelof/dragon_quest_builders_2_post_game_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/jefobexapulow/logo_quiz_android_crowd_level_18_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/xujitezu/93189846110.pdfIn PDF document text
    • https://s3.amazonaws.com/vonusirukete/arrhythmia_guidelines_2017_ppt.pdfIn PDF document text
    • http://liroporuki.myartsonline.com/wireless_n_repeater_wps_connect.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_off0000de0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE0B 5236 bytes
SHA-256: f7ca94a84b9b2a354f47d53d387f4bc2e57faf50d4273c9f8ec66ecc39d3325c
font_01_sfnt_off0000efd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFD1 10412 bytes
SHA-256: 3769a7da0dea92c12d6c546ab0592a7f22870984b1ebd29775f2c1202093cf10

Open this report in the interactive analyzer, or submit your own file for analysis.