Malicious PDF — malware analysis report

Static analysis result for SHA-256 418983f7867ce0f4…

MALICIOUS

PDF

79.1 KB Created: 2021-03-05 09:50:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 1dc1cf3a9b84cfd7bbbf2276b4ef2ed3 SHA-1: 9ceaed59976c11807fb1fe78805fc6d79543019d SHA-256: 418983f7867ce0f4b4215b6f0c84fea343392d6df39aae886b55c8e866e6d7ef
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. ClamAV and ML classifiers flagged this PDF as malicious, indicating a high likelihood of malicious intent. The document body, though heavily obfuscated, suggests a lure related to business costs, aligning with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://maypoin.ru/123?utm_term=how+much+does+it+cost+to+open+a+chicken+shack PDF link annotation
    • https://cdn.sqhk.co/dazulegug/mJhgpNq/labirintite_em_espanhol.pdfIn PDF document text
    • https://cdn.sqhk.co/tasokuxu/i9idgiW/83801689084.pdfIn PDF document text
    • https://cdn.sqhk.co/butemobe/jidjage/dungeon_defenders_special_delivery.pdfIn PDF document text
    • https://cdn.sqhk.co/fojevimexu/jcgcojc/prepper_food_list_costco.pdfIn PDF document text
    • https://cdn.sqhk.co/torazanopuni/ihjaZic/sliters_lakeside_montana.pdfIn PDF document text
    • https://cdn.sqhk.co/nananava/igh3Wtd/drinking_wine_big_glass_gif.pdfIn PDF document text
    • http://jaxagogilexet.sportsontheweb.net/tower_of_nero_release_date_uk.pdfIn PDF document text
    • https://cdn.sqhk.co/naziwixolagu/Wjc05gf/29101694905.pdfIn PDF document text
    • https://cdn.sqhk.co/rasepotobami/ThiUJjh/razir.pdfIn PDF document text
    • https://cdn.sqhk.co/rurokusulos/gjKFJhe/7846565656.pdfIn PDF document text
    • https://cdn.sqhk.co/vasozaponem/gjbgcia/52346959955.pdfIn PDF document text
    • https://cdn.sqhk.co/karapenakozi/ccWjfgh/pevil.pdfIn PDF document text
    • https://cdn.sqhk.co/dugelabomaw/9Pzf6hf/27142199315.pdfIn PDF document text
    • https://cdn.sqhk.co/sifalavuxozo/7higdpz/20996074828.pdfIn PDF document text
    • https://cdn.sqhk.co/pinepopowig/ielMjfp/balenciaga_shoes_triple_s_black_and_red.pdfIn PDF document text
    • http://manapuzasupin.sportsontheweb.net/how_to_use_iphone_for_elderly.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://liraperuwuw.atwebpages.com/clear_sky_chart_android_app.pdfIn PDF document text
    • https://s3.amazonaws.com/tobaziw/fevad.pdfIn PDF document text
    • https://s3.amazonaws.com/gasodamuza/65804500229.pdfIn PDF document text
    • https://s3.amazonaws.com/nafoxuda/60672979551.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_off0000f7f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7F5 5300 bytes
SHA-256: 6aa55a9469f9cf8abc65e920e55407f0915935dda7197eedbd3b4d3f8b02fa90
font_01_sfnt_off000109ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109EC 10708 bytes
SHA-256: 4b1882fa630dec031a8f048d5551a27d5fbdec7630991994ed5f59a87836aebe

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