Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1adb43ceac2dc72…

MALICIOUS

PDF

67.4 KB Created: 2021-03-18 11:07:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e193a2fea8eb1acf9a8cdf8ca074f79a SHA-1: 35dcc45e5b8b293097ab99c6be91a67d3c850765 SHA-256: a1adb43ceac2dc7257a969c743eda89006cec0123f558d59d6363779ee689650
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a malicious domain, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or delivering a secondary payload. No scripts were extracted, but the presence of external URIs points to an attempt to download or redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jumiwimov.ru/123?utm_term=lopsided+crossword+puzzle+answer
    • http://bonboxstudio.com/coaster_brake_hub_diagramy4v96.pdf
    • https://cdn.sqhk.co/xidupesijij/6hemziH/killer_bean_unleashed_unblocked.pdf
    • http://joretuvivofip.22web.org/66827468814.pdf
    • https://cdn.sqhk.co/mitejapeki/OH8ajdx/pak_chat_rooms_free_online.pdf
    • https://cdn.sqhk.co/tefazaturar/hengShf/57645479160.pdf
    • http://circulshtangcalip.website/vejevananopimefixdesq.pdf
    • http://goloszauniver.fun/wow_dk_glyphsvmjtu.pdf
    • http://maxidadikegi.iblogger.org/prime_minister_awas_yojana_application_form_online.pdf
    • http://stopro.store/child_psychologist_evaluation_near_mea3xk8.pdf
    • https://cdn.sqhk.co/zimopiroxab/WGkhhei/65647723525.pdf
    • https://cdn.sqhk.co/rorefevobo/gjghay5/wipako.pdf
    • http://russianpatentexpert.com/what_are_the_main_components_of_a_business_reporting_systemzw6ks.pdf
    • https://cdn.sqhk.co/pinofizulag/dUjhhcw/funny_guys_are_dangerous_meaning.pdf
    • https://cdn.sqhk.co/girewobo/WMl8v2H/tennis_champion_mod_apk.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/cb75f650-a6d0-430d-84c1-9de768213fe3/petusudegimobuxesuni.pdf
    • https://s3.amazonaws.com/sefepugolupalax/dufawugusananuruwipikavo.pdf
    • https://uploads.strikinglycdn.com/files/33c25d1d-bc02-4115-baa5-73c178af11b3/nasm_essentials_of_personal_fitness_training_audiobook.pdf
    • https://uploads.strikinglycdn.com/files/113afbe7-26bf-4f00-b831-1cb41236d8ae/19454209135.pdf
    • https://s3.amazonaws.com/simujix/namekuwu.pdf
    • https://s3.amazonaws.com/jonora/kossan_rubber_industries_berhad_annual_report_2018.pdf
    • http://moxozejoxolisuf.epizy.com/93388604070.pdf
    • https://s3.amazonaws.com/leteraxewe/37911549659.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_off0000caee.bin
9d87fb4df0a8c5aa766e7110df3e2f9c9eeed6d90a415f658fddf4aa4055b35e
pdf-font-stream PDF embedded font (sfnt) at offset 0xCAEE 5148 bytes
font_01_sfnt_off0000dc9d.bin
4b5717f3f5d866740997f795b435b1dd375d50212a8afb25d85138774969371b
pdf-font-stream PDF embedded font (sfnt) at offset 0xDC9D 10352 bytes