Malicious PDF — malware analysis report

Static analysis result for SHA-256 53f6673be883391d…

MALICIOUS

PDF

73.7 KB Created: 2021-03-21 04:41:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: f6be6393c5e0d9b5bce4444b51f16a7a SHA-1: ee7abaf70dd9786ebdcab4f11fe9dd41a60e271f SHA-256: 53f6673be883391d1cfb59e358fc1e2aa2751c10cb918796a1257ac35078f634
96 Risk Score

Malware Insights

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

The file was detected as malicious by a ML classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an external URI pointing to a suspicious domain, likely a phishing lure. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious websites, potentially for credential harvesting or malware distribution.

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://botokaw.ru/strik?utm_term=d%2526d+5e+way+of+shadow+monk+build PDF link annotation
    • http://topfrag.rip/turn_off_data_roaming_notification_galaxy_s10jcz1i.pdfIn PDF document text
    • http://naturmilans.fun/green_smoothie_recipe_healthy_breakfastk0vvl.pdfIn PDF document text
    • http://towufato.mywebcommunity.org/learning_python_o_reilly.pdfIn PDF document text
    • https://cdn.sqhk.co/kivipemo/CBzRJjj/4831920716.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408355/normal_5ffe50d7cba04.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419650/normal_6046789def12b.pdfIn PDF document text
    • https://cdn.sqhk.co/kigimijexap/kjagfha/all_recharge_bill_payments_cashback_apps.pdfIn PDF document text
    • https://cdn.sqhk.co/givilegom/keZy4Cc/big_ideas_simply_explained_science.pdfIn PDF document text
    • http://ses-paypal.com/gofovinefoxugaxorajixosk81dq.pdfIn PDF document text
    • http://sozaxesugoj.mywebcommunity.org/felosot.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393772/normal_602e3db7e0283.pdfIn PDF document text
    • https://cdn.sqhk.co/bisuligiga/ejfIib5/entergy_louisiana_quick_pay.pdfIn PDF document text
    • http://kemedejovon.getenjoyment.net/lakafulemojosuga.pdfIn PDF document text
    • http://electrumwallet.buzz/does_dialectical_behavior_therapy_work_for_ptsde75r7.pdfIn PDF document text
    • https://cdn.sqhk.co/jedepazisu/g1hiu1O/pets_hd_wallpapers_1920x1080_for_mobile.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/nemafu/jogutunazuwupopumonujexad.pdfIn PDF document text
    • https://s3.amazonaws.com/varolexexus/document_approval_form_template.pdfIn PDF document text
    • https://s3.amazonaws.com/jeduzizonox/kusumumijutiwowaler.pdfIn PDF document text
    • https://s3.amazonaws.com/tizowodifi/waxewofilumexoma.pdfIn PDF document text
    • http://mojozore.myartsonline.com/how_to_unlock_kenmore_he2t_washer.pdfIn PDF document text
    • https://s3.amazonaws.com/kakef/74886707082.pdfIn PDF document text
    • http://tebuwawezizafes.onlinewebshop.net/substitution_method_examples_with_answers.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_off0000e7ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7AC 4156 bytes
SHA-256: 5ae3bcc49c87f96444fbe3d11ff27db43b6aea299416b9f3d286273c64098da8
font_01_sfnt_off0000f5da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5DA 10612 bytes
SHA-256: f3a25bda3635df85fe2cbd0fd88647c45561dde2285d8effba354f8492ecc800

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