Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9497e753223d2f0…

MALICIOUS

PDF

79.5 KB Created: 2021-03-23 06:10:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 17c004751e6e7bbc7334b01f0f124683 SHA-1: ac4cb717f34f6b28c1af48f2d3b72b9b997d3eab SHA-256: d9497e753223d2f04a343e21ba2e7514a1ff02d0e0a99b002d4141aed2823633
96 Risk Score

Malware Insights

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

The file is a PDF document flagged by ClamAV and an ML classifier as malicious. It contains an embedded external URI pointing to a suspicious domain, which is a common tactic for phishing or directing users to download further malicious content. No scripts were extracted, but the presence of external URLs and the high confidence verdict suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://pelibifir.ru/strik?utm_term=cygolite+hotshot+100+review
    • https://cdn.sqhk.co/detaludolef/jgCjczM/zefigebozifibimar.pdf
    • http://xeratigike.medianewsonline.com/etude_de_la_cellule_animale.pdf
    • http://qlemelest.online/455194613471xxlh.pdf
    • https://cdn.sqhk.co/fuluzagile/0jdEgiG/38785505030.pdf
    • http://lomuwugevona.getenjoyment.net/carrefour_laval_map.pdf
    • http://pejurazatox.iblogger.org/wuwogarad.pdf
    • https://cdn.sqhk.co/memenewo/dzwbWhb/nalabitipa.pdf
    • http://rebezun.mygamesonline.org/how_to_use_a_ti-30x_iis.pdf
    • http://womenit.space/selapizibixopojuripiemup.pdf
    • https://cdn.sqhk.co/wodigajamu/SYYdUjf/legacy_of_a_whitetail_deer_hunter_shooting_locations.pdf
    • http://lonotel.mygamesonline.org/pudodezijoforabixin.pdf
    • http://vedivux.mygamesonline.org/full_oxford_dictionary_download.pdf
    • https://cdn.sqhk.co/kosuxatune/WjfgfHo/bit_ir_software.pdf
    • https://cdn.sqhk.co/zupitefa/ctjdgfF/demelefemijikef.pdf
    • https://cdn.sqhk.co/gatidixon/jo8oBjd/bamigadepinafugapu.pdf
    • http://vuzetasavuxoso.mygamesonline.org/arkansas_bill_of_sale_for_car.pdf
    • https://cdn.sqhk.co/tobamozusaj/hlTkicU/glitter_dress_coloring_and_drawing_apk.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://muburenimigalu.epizy.com/peruvadavore.pdf
    • http://dogiperij.epizy.com/dejag.pdf
    • http://zazedosipafefu.epizy.com/10511117775.pdf
    • http://nozozuwovore.atwebpages.com/senior_graphic_designer_salary_toronto.pdf
    • http://selosaxugi.epizy.com/calories_list_in_indian_food.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f57d.bin
6623a63fc41b77e94c1cc1c92dd0a285fc8f410835d2cea6d95a7b6c6ea4fcf5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF57D 5088 bytes
font_01_sfnt_off000106ed.bin
f7422611f85c6a48975c3210a37e2ebf0046eb4c23ef2c0f34f4a945d8d99332		 pdf-font-stream PDF embedded font (sfnt) at offset 0x106ED 12012 bytes

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