Malicious PDF — malware analysis report

Static analysis result for SHA-256 18ab26d409e37510…

MALICIOUS

PDF

77.4 KB Created: 2021-04-15 18:32:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 55f8ee95dbc336cf3ba87ce19f9def84 SHA-1: 709e0cfea7c4656b624f37fc0947b4385f2eab60 SHA-256: 18ab26d409e375109f4aff9f9b1c84efc2033b17d23529a367ea0cb3083b1ff9
96 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The embedded URL `https://soxebez.ru/strik?utm_term=pretty+little+liars+the+perfectionists+season+1+episode+1+cast` is likely used to redirect the user to a phishing or malware distribution site. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to exploit users through social engineering.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://soxebez.ru/strik?utm_term=pretty+little+liars+the+perfectionists+season+1+episode+1+cast PDF link annotation
    • http://lightstart.xyz/why_do_i_have_a_bald_spot_on_the_crown_of_my_headzkzqf.pdfIn PDF document text
    • http://chestlune.online/96227812627vs0bs.pdfIn PDF document text
    • http://manthoughtswebsite.website/74973356317xz3t7.pdfIn PDF document text
    • http://nefritthebestthing.site/wall_street_journal_prime_rate_2019_historytbbgd.pdfIn PDF document text
    • http://bettermoneytips.com/63381519175l3xm4.pdfIn PDF document text
    • http://reactivaperu-viabcpi.com/gepujodekrxjvx.pdfIn PDF document text
    • http://insta-sale.site/petelazutujezisotknd5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4960ac6-b84b-41a4-b13c-18cdc1df777e/how_to_reset_verifone_mx925.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0be4df2a-064d-4797-98c7-610aa818b43a/76574460006.pdfIn PDF document text
    • https://s3.amazonaws.com/jenagubadopi/reporting_anti_social_behaviour_to_council.pdfIn PDF document text
    • https://s3.amazonaws.com/resisuna/vuzaturatuni.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86e5d137-8712-4411-86f6-48c8cb85cfa1/68344842255.pdfIn PDF document text
    • https://s3.amazonaws.com/xonaxevetaf/bloons_td_5_apk_mod_3._18.pdfIn PDF document text
    • https://s3.amazonaws.com/sefepugolupalax/history_of_broadcast_media_in_nigeria.pdfIn PDF document text
    • https://s3.amazonaws.com/bogeguva/goloxazoxewejiw.pdfIn PDF document text
    • https://s3.amazonaws.com/nedijowewoded/waxawurimiva.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d2962fa-5d80-446f-a6db-eba62fd71608/essential_oils_desk_reference_7th_edition_by_life_science_publishing.pdfIn PDF document text
    • https://s3.amazonaws.com/gazivemon/loneliness_pictures_free.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxalowafokuvo/34815777720.pdfIn PDF document text
    • https://s3.amazonaws.com/posaxugidut/hotstar_android_tv_apk_latest.pdfIn PDF document text
    • https://s3.amazonaws.com/vukujidor/activity_transition_android_api.pdfIn PDF document text
    • https://s3.amazonaws.com/donarepemi/75731202868.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_off0000ef71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF71 5396 bytes
SHA-256: b9067fe650c80e102dcd38a44c8dc2f130481e6f2eda73a6378cd4829ec28486
font_01_sfnt_off000101d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101D2 11068 bytes
SHA-256: e3b44827694e591604e1b5ba155a26c302f75654d4ef382b26efaa56f312acf7

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