Malicious PDF — malware analysis report

Static analysis result for SHA-256 7642bdbad92b907e…

MALICIOUS

PDF

81.3 KB Created: 2021-03-02 13:33:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 2f02146ce83eaa78cac811d760030a83 SHA-1: 709a306bd9a0de58d157891cde8d1c65dd564892 SHA-256: 7642bdbad92b907e9985f2881edf8d4dc7811b92715369200819c6f0b9916a34
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL pointing to a suspicious domain, which is a strong indicator of a phishing attempt. The ML classifier and ClamAV detection further confirm its malicious nature. The presence of PDF-specific heuristics suggests exploitation or obfuscation techniques common in malicious PDFs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://midufefew.ru/award?keyword=stillwater+ok+drivers+license+testing PDF link annotation
    • https://cdn.sqhk.co/rapavuse/ThijhSu/81295041956.pdfIn PDF document text
    • https://cdn.sqhk.co/dadakafopina/ieihPhi/5999105878.pdfIn PDF document text
    • http://tipofeliluget.medianewsonline.com/cat_416_backhoe_reviews.pdfIn PDF document text
    • http://dudupikitum.iblogger.org/remington_1100_20_gauge_youth_stock_and_forend.pdfIn PDF document text
    • https://cdn.sqhk.co/kawonidoza/ibgdxja/voice_of_darth_vader_new_hope.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/gadumagabusodel/liability_waiver_release_form_template.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxutedi/tatexidilapigalisupese.pdfIn PDF document text
    • https://s3.amazonaws.com/sisaxu/wawetaso.pdfIn PDF document text
    • http://tesoxukezeziles.epizy.com/75903099137.pdfIn PDF document text
    • https://s3.amazonaws.com/megelugik/kafeginolafumelovoxisuge.pdfIn PDF document text
    • https://s3.amazonaws.com/kegubinefuda/97776062051.pdfIn PDF document text
    • http://nubuzozaso.rf.gd/behavior_color_chart_template.pdfIn PDF document text
    • https://s3.amazonaws.com/vojapu/50021357770.pdfIn PDF document text
    • https://s3.amazonaws.com/kefefetafij/pride_celebrity_xl8_mobility_scooter_manual.pdfIn PDF document text
    • http://xomapagovujux.atwebpages.com/twilight_portrait_movie_watch_online_free.pdfIn PDF document text
    • http://liraperuwuw.atwebpages.com/buwelerobatijudatisi.pdfIn PDF document text
    • http://larafegarinev.epizy.com/assassins_creed_dialogue_symbols.pdfIn PDF document text
    • http://bixodog.rf.gd/pokemon_black_breeding_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/legesiliv/87268385873.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_off0000fad0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAD0 5428 bytes
SHA-256: ee841a0af0ad8f82d84db617a9b372611f1868caa11b3c469f119dab09454f54
font_01_sfnt_off00010d6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D6E 13488 bytes
SHA-256: ea3e955eb29387999f72048f4ab71533e453c0af3020536e354889c71819420f

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