Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5a927eb97202583…

MALICIOUS

PDF

66.8 KB Created: 2021-03-03 02:45:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 7ab31105815cd33c4371d054a71fdd1e SHA-1: b763da785d80a8079cf090c5301bb8a24b450052 SHA-256: a5a927eb9720258328f61e6897be36414262145cf34602afbb72ebcf3b1adbb5
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://nipisod.ru/wix?keyword=12.3+dna+replication+worksheet+answers+pdf PDF link annotation
    • http://xeresorejal.iblogger.org/odia_song_2019_human_sagar.pdfIn PDF document text
    • http://gixipures.sportsontheweb.net/jefilusati.pdfIn PDF document text
    • http://gumidaz.medianewsonline.com/what_is_portia_de_rossi_worth.pdfIn PDF document text
    • http://zisuroto.mygamesonline.org/cant_connect_to_my_linksys_extender.pdfIn PDF document text
    • http://wedipum.mygamesonline.org/the_human_animal_desmond_morris_quotes.pdfIn PDF document text
    • https://cdn.sqhk.co/wojusipi/NjhzQmv/hospital_pick_up_and_drop_off_service.pdfIn PDF document text
    • https://cdn.sqhk.co/bosamame/oujaCkT/free_live_wallpaper_download_for_windows_7.pdfIn PDF document text
    • https://cdn.sqhk.co/livisade/b2EwySF/lancaster_general_health_urgent_care_lititz_kissel_hill.pdfIn PDF document text
    • https://rinavufapakoto.weebly.com/uploads/1/3/4/4/134460237/zegamo_zedumupirara_rolisofaza.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/waxegatulo/black_skin_girl_lyrics.pdfIn PDF document text
    • http://mimiwuzoxul.epizy.com/mozilla_firefox_52._3._0.pdfIn PDF document text
    • https://s3.amazonaws.com/kefiperizonofu/christy_nockels_let_it_be_jesus.pdfIn PDF document text
    • https://s3.amazonaws.com/liguwubore/welexuwebemupif.pdfIn PDF document text
    • https://s3.amazonaws.com/xuvamuba/56215350852.pdfIn PDF document text
    • https://s3.amazonaws.com/dobikasukavu/42625190153.pdfIn PDF document text
    • https://s3.amazonaws.com/dozore/dell_optiplex_790_display_drivers_for_windows_10_64_bit.pdfIn PDF document text
    • http://jowanesivokadeb.rf.gd/canonical_transformation_in_classical_mechanics_problems.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_off0000ca68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA68 5684 bytes
SHA-256: f944ee274ead1138d72f55e857149d8284a9066d92ce108969961bdc1e64db35
font_01_sfnt_off0000ddd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDD7 9372 bytes
SHA-256: 2809ce26372b9b15eb73a6780a8c4079a176a3f32f9b7d0ada7d5fd508d3b7bf