Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd8179437c06616c…

MALICIOUS

PDF

81.8 KB Created: 2021-02-24 04:08:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 7b7d9efe19e5fe9cb684b5a79d29b3d4 SHA-1: fe6bfa33879aea837e28a1fede38fe5f923cdbc7 SHA-256: bd8179437c06616ceec2dac96df0c8ee6328809bf390a0e966a35636dc3b771f
96 Risk Score

Malware Insights

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

The PDF document contains an embedded URL that, when clicked, leads to a phishing page disguised as a help article. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or malware distribution. While no scripts were directly extracted, the presence of external URIs and the nature of the detection suggest the document is designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://jottigo.ru/123?utm_term=why+is+my+lg+front+load+washer+not+draining PDF link annotation
    • https://cdn.sqhk.co/wevafofed/XjiVGpy/8297445605.pdfIn PDF document text
    • https://cdn.sqhk.co/pumopivosoba/PyhehGb/horror_city_zombie_smashers.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470024/normal_5fda33779ef03.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426085/normal_600258f805c7e.pdfIn PDF document text
    • https://cdn.sqhk.co/kunimoxifagi/igfhbN0/xozokijepuwunelu.pdfIn PDF document text
    • https://cdn.sqhk.co/vabalogu/ibwighe/your_smile_is_so_beautiful_quotes_for_her.pdfIn PDF document text
    • https://cdn.sqhk.co/joxipadij/ia0ijjh/tewalupopobivalobi.pdfIn PDF document text
    • https://cdn.sqhk.co/konosoka/dXDsihR/my_hero_academia_hd_wallpaper_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/kivuwutu/jahgjdx/74042435563.pdfIn PDF document text
    • https://cdn.sqhk.co/niwonosorude/f6yjapo/mens_long_hairstyles_undercut.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/sorapobuk/infection_control_guidelines_for_dental_offices.pdfIn PDF document text
    • http://xuxamasisovuku.epizy.com/24117887974.pdfIn PDF document text
    • https://s3.amazonaws.com/futamo/jaduwokukejiwesutisiloma.pdfIn PDF document text
    • http://jifazuniduvosi.epizy.com/xabazidizasufinutevomox.pdfIn PDF document text
    • https://s3.amazonaws.com/tezude/35480786651.pdfIn PDF document text
    • https://s3.amazonaws.com/kukazowox/bajrangbali_song_now.pdfIn PDF document text
    • https://s3.amazonaws.com/sefiwegegagu/baal_veer_film_video_song.pdfIn PDF document text
    • https://s3.amazonaws.com/dovulavavo/fusitapomuvapinoxo.pdfIn PDF document text
    • http://wetoxikilosawa.epizy.com/golden_kicking_horse_snow_report.pdfIn PDF document text
    • https://s3.amazonaws.com/tixedujegibex/97363213526.pdfIn PDF document text
    • https://s3.amazonaws.com/limepusotanal/kikedalumufarud.pdfIn PDF document text
    • https://s3.amazonaws.com/metubevozisul/56132594335.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB36 5528 bytes
SHA-256: 6df71648a48ba311151ce89d2be4afb35306e83b37bc5d2349cdfcf2970d962b
font_01_sfnt_off0000fdf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDF6 11248 bytes
SHA-256: 57760386ede8cc8c6aa85d9bf603b24e2ac09a7237e60fc7d259b770782225e6
font_02_sfnt_off0001246b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1246B 16060 bytes
SHA-256: 99ddc6f5858eb134f8024171ebe717cbd02485c31471b921a5021903b5272953

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