Malicious PDF — malware analysis report

Static analysis result for SHA-256 e452f81960423194…

MALICIOUS

PDF

76.3 KB Created: 2021-03-13 17:03:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2ca0d57a5f6a2d511ca487c41e4a8002 SHA-1: a950fb511de2e9e54d3f63cb650a30200b39f1e1 SHA-256: e452f8196042319468ddca3a03e9c37dcfd2d8c5fcc7554e12090f88922b17dc
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF that contains an embedded URL pointing to a potentially malicious domain, disguised as a medical test procedure document. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the presence of external URIs suggests an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://dugedepap.ru/award?keyword=urine+culture+and+sensitivity+test+procedure+pdf
    • http://beviluxenumiliv.mywebcommunity.org/who_made_the_moon_little_river_band_lyrics.pdf
    • https://wovitinukid.weebly.com/uploads/1/3/4/3/134372120/zoxafanubafus-vuwawadujano-dowozixaduki.pdf
    • https://cdn.sqhk.co/pixorikibam/ibjaDmr/fonts_for_instagram_symbols.pdf
    • http://circleshtang.xyz/73981687322zrfne.pdf
    • https://cdn.sqhk.co/xedaberetaj/iidgcjj/illegal_to_leave_car_running_while_pumping_gas.pdf
    • http://arfeshome.com/bmat_preparation_bookptehv.pdf
    • https://cdn.sqhk.co/putizimetiwe/jdibege/guxabamatedak.pdf
    • http://domsale.xyz/how_much_does_a_mini_german_shepherd_costaa3xf.pdf
    • http://ruguwafe.scienceontheweb.net/agudas_graves_o_llanas_esdrjulas_y_sobreesdrjulas.pdf
    • http://gufutaca1.xyz/nibixuqdly6.pdf
    • http://ninomut.sportsontheweb.net/howard_miller_large_wall_clock_parts.pdf
    • https://cdn.sqhk.co/dapalufited/BHnyigV/dancing_tiles_edm_rhythm_game_download.pdf
    • https://gebodakejodige.weebly.com/uploads/1/3/4/3/134316683/1188349.pdf
    • https://cdn.sqhk.co/tajixixejafi/8hbjAjj/domino_s_pizza_village_road_leland_nc.pdf
    • https://jubekufolofifi.weebly.com/uploads/1/3/4/5/134593927/5682256.pdf
    • https://moxalabukeziro.weebly.com/uploads/1/3/4/7/134772199/ruzaja_raviw.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://gegilifopom.myartsonline.com/sezokebukefojituzizev.pdf
    • http://xuperag.epizy.com/warranty_deed_form_texas_free.pdf
    • http://wugujub.onlinewebshop.net/numibuzilirasilunokos.pdf
    • http://surowopewol.epizy.com/european_guidelines_of_hypertension_2018.pdf
    • http://vidugozu.atwebpages.com/student_engagement_in_the_classroom_examples.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f11c.bin
81b5a69ee94955ae55ec015b5396e49475d5cddc8c93e447e3fbf1b9e9f3ba7a
pdf-font-stream PDF embedded font (sfnt) at offset 0xF11C 5304 bytes
font_01_sfnt_off00010344.bin
052c9372a8fb06bf475257bf1db684a6708e6e87c51bdd900e6cce5ace9ab234
pdf-font-stream PDF embedded font (sfnt) at offset 0x10344 10136 bytes