Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0470b5e6e736487…

MALICIOUS

PDF

68.4 KB Created: 2021-03-22 21:13:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6f2743cd8578ccc84d78fb1fe26a6adc SHA-1: d23ee034009efef9990ab27a98acce4ed4cc114a SHA-256: e0470b5e6e736487f46c65bce491df814539984549d7a871d19d9397331a08cf
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site.

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://vilenefex.ru/strik?utm_term=nuvision+tablet+10.1+64gb
    • http://bufizuz.22web.org/louisiana_state_procurement_code.pdf
    • http://supobesopo.mygamesonline.org/wordly_wise_teacher_resource_book_7.pdf
    • https://cdn-cms.f-static.net/uploads/4388833/normal_60400e2bb3516.pdf
    • https://static.s123-cdn-static.com/uploads/4471099/normal_5ffe81737b373.pdf
    • https://cdn.sqhk.co/fekigimuzib/6jhIijW/tokyo_rush_street_racing_mod_apk.pdf
    • https://cdn.sqhk.co/libuzewis/gfjcdhc/logejadobipilegasapi.pdf
    • http://merexazumebenag.medianewsonline.com/56312314376.pdf
    • https://cdn.sqhk.co/kuzetuzame/ulGNiiA/car_hill_racing.pdf
    • https://cdn.sqhk.co/lagidexetin/i9fhh3d/81835888181.pdf
    • https://cdn.sqhk.co/bodovukig/mSjajhn/mavekupatigu.pdf
    • https://static.s123-cdn-static.com/uploads/4368496/normal_5fe559f5dbc70.pdf
    • http://tumafabo.22web.org/wayne_dalton_garage_door_opener_repair.pdf
    • https://cdn.sqhk.co/nilimijano/kgiZhfp/mp3_music_player_with_lyrics_apk.pdf
    • https://cdn.sqhk.co/noligigibar/jehcUTp/reflections_practice_1_worksheet.pdf
    • https://cdn.sqhk.co/gotakavapu/biahjhU/the_legacy_3_walkthrough_part_3.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://gipebevu.atwebpages.com/why_does_my_coleman_hot_tub_keep_shutting_off.pdf
    • http://pikasimowojinub.epizy.com/those_who_wait_upon_the_lord_quotes.pdf
    • http://retinibefefemo.rf.gd/26467003551.pdf
    • https://uploads.strikinglycdn.com/files/c7ee0d4f-0c3b-4214-a618-82c452d056c2/how_to_play_with_naruto_cards.pdf
    • https://uploads.strikinglycdn.com/files/25078764-2883-46ab-9476-e1ee63a514a3/67715318551.pdf
    • http://vivubela.epizy.com/cecil_medicine_24th_edition.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_off0000cbd9.bin
051d06f99dfee9986f7dacd3d3c1283342e0f504027dc9366aef045bd90937af
pdf-font-stream PDF embedded font (sfnt) at offset 0xCBD9 5392 bytes
font_01_sfnt_off0000de5f.bin
a4cadabac517aee00ddab6e930e267bcf5d4ce7dd57a9680ef68e9b09c7bb4f0
pdf-font-stream PDF embedded font (sfnt) at offset 0xDE5F 11156 bytes