Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c24fb6796b8c51a…

MALICIOUS

PDF

88.6 KB Created: 2021-03-06 17:54:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 316ed07ec524ce341696e0cb34b75676 SHA-1: c673584af98961fc481cd8ba2cd23302c8819748 SHA-256: 9c24fb6796b8c51a3d152e96d4a2cf15f921920333d1010447fd4134d4997808
96 Risk Score

Malware Insights

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

The PDF file contains a lure related to "shrm certification" and embeds a URL that redirects to a suspicious domain. ClamAV detection and ML classification strongly indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the embedded URI and detection signatures point to a phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://nipisod.ru/aws?utm_term=is+a+shrm+certification+worth+it PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4380068/normal_5fde7633d428d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382961/normal_6023da3690093.pdfIn PDF document text
    • https://cdn.sqhk.co/rutesawir/cij5Wjh/merrie_melodies_the_early_worm_gets_the_bird.pdfIn PDF document text
    • http://naturalgood.space/zalutouok4z.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372707/normal_5fd04ae63a2d0.pdfIn PDF document text
    • http://peromopativej.mypressonline.com/fibomerutafasodafujigirid.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448103/normal_6040634be6637.pdfIn PDF document text
    • https://cdn.sqhk.co/gabunufu/sYhdCDu/sun_wukong_monkey_king_movie.pdfIn PDF document text
    • http://jarokixepoweso.mypressonline.com/44021521342.pdfIn PDF document text
    • http://mutujejeturuduf.medianewsonline.com/how_to_cancel_enercare_hot_water_tank_rental.pdfIn PDF document text
    • https://cdn.sqhk.co/naziwixolagu/edhbjdl/marketing_mix_strategy_example.pdfIn PDF document text
    • http://redpandarecycling.com/does_planet_fitness_allow_bodybuildersaieid.pdfIn PDF document text
    • http://gefosezidubajoz.scienceontheweb.net/lista_de_verbos_regulares_en_pasado_perfecto_en_ingles_y_espaol.pdfIn PDF document text
    • http://fuvisetitisenon.mypressonline.com/15322894812.pdfIn PDF document text
    • http://vengriya.space/wuvavaguwowave1xh.pdfIn PDF document text
    • http://mapugukabazewu.scienceontheweb.net/auld_lang_syne_means_good_times_ahead.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/timeziso/85614153313.pdfIn PDF document text
    • https://s3.amazonaws.com/timeziso/counter_strike_1._6_setup._exe.pdfIn PDF document text
    • https://s3.amazonaws.com/lejivugeleguwod/godoga.pdfIn PDF document text
    • http://sinusisokopex.atwebpages.com/xilifexajadiv.pdfIn PDF document text
    • http://zoligagomuwe.onlinewebshop.net/what_is_an_example_of_specific_deterrence.pdfIn PDF document text
    • http://pezamax.myartsonline.com/41902677125.pdfIn PDF document text
    • https://s3.amazonaws.com/gewisetug/87284268828.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_off00011db9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DB9 5120 bytes
SHA-256: 3a214e29fed97b1bff8ca870c489378a86381211f7ae277f1472bfa5c499445a
font_01_sfnt_off00012f0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F0D 11376 bytes
SHA-256: 2d14dba365b9aa06d13f59c37ddca88df95c460e58aa66894e94988b5dccc714

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