Malicious PDF — malware analysis report

Static analysis result for SHA-256 be7fbbffac1173d3…

MALICIOUS

PDF

74.2 KB Created: 2021-02-22 07:21:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 5081c065c9a01726649792d763661021 SHA-1: 4edb4316cb2ae675a88853260a3518b256661eb5 SHA-256: be7fbbffac1173d3db4aa012919e648bae232f4285ce02e1a66204d2327da531
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a critical heuristic firing for ClamAV detection. An external URI, 'https://seumenha.ru/wb?keyword=what%20are%20the%20milestones%20of%20an%208%20month%20old%20baby', was extracted, suggesting a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and the presence of embedded URLs indicate potential for malicious JavaScript execution or redirection to further malicious content.

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://seumenha.ru/wb?keyword=what%20are%20the%20milestones%20of%20an%208%20month%20old%20baby PDF link annotation
    • https://cdn.sqhk.co/wogokodu/gfogd1e/final_cut_pro_sound_effects_add.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381978/normal_5fda72244ce81.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413225/normal_60230e4c14806.pdfIn PDF document text
    • https://cdn.sqhk.co/jezuleku/gdgcgcK/toca_hair_salon_3_free_download_pc.pdfIn PDF document text
    • http://greatholl.com/27724207119jnuj.pdfIn PDF document text
    • http://boost-shop.xyz/655879433xsp9r.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457011/normal_5fcca0c540cfb.pdfIn PDF document text
    • http://olymp-trade.top/85953065029tqy7j.pdfIn PDF document text
    • https://cdn.sqhk.co/kigowabalo/UYPghBI/black_friday_deals_2019_iphone_8_plus.pdfIn PDF document text
    • https://cdn.sqhk.co/liwewajawab/ibjhieU/99875501654.pdfIn PDF document text
    • http://zoomita.fun/980778799817yisy.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412151/normal_5feafd4035411.pdfIn PDF document text
    • http://sellforce.ru/commutative_property_of_addition_worksheetsrax6w.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/wazagidonux/how_often_do_you_have_to_change_the_brita_water_bottle_filter.pdfIn PDF document text
    • https://s3.amazonaws.com/niwotipugonuvoz/algebraic_long_division_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/sizadagazagaj/thickness_tolerance_of_mild_steel_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/xirixepo/temufivefabiw.pdfIn PDF document text
    • https://s3.amazonaws.com/fadobirak/mozart_divertimento_in_d_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/fadedosi/bosch_classixx_5_instrukcja.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d7ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7EF 5384 bytes
SHA-256: dd7c59f1abf702dcdc807a1ca4c03f45be4c77aa679de1a0cf1b7a6a6457069f
font_01_sfnt_off0000ea20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA20 10196 bytes
SHA-256: aa345fe9e0db33e429f42ea7d4a37d2efd14044a73217815033f6f247b579943
font_02_sfnt_off00010cfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CFE 4324 bytes
SHA-256: 8405bb6ca9a6fb718a2e910e1cdde4d74ac2122cab0061dc5f772322db9c7ccd

Open this report in the interactive analyzer, or submit your own file for analysis.