Malicious PDF — malware analysis report

Static analysis result for SHA-256 29593137e2b0515f…

MALICIOUS

PDF

73.6 KB Created: 2021-02-16 04:20:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: ce5e80ee542301b660ef97f679e5d666 SHA-1: 0b99f262f645cea5b35dc0e561db2f40304ee8fb SHA-256: 29593137e2b0515fa02fa26e94679113753d84882dc63f4cc282f5f3205611c7
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to disposable hosting and are part of a link farm, suggesting a phishing or scam attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains text related to search terms, reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://bologen.ru/wb?keyword=human%20resource%20management%20pdf%20in%20hindi PDF link annotation
    • http://jewlgems.com/65601203271waal0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419195/normal_5fc78e07b5bef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470535/normal_601f925d7077a.pdfIn PDF document text
    • http://4d-5d.com/fedagonikilodirados6b7m.pdfIn PDF document text
    • http://copyrighthelpcentral.com/notadepuzepuralorzkeoi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412593/normal_5ffd36316503d.pdfIn PDF document text
    • http://helpcenterbusiness.xyz/adventism_in_zambia_by_matandikoib8ws.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381547/normal_5fd974c579872.pdfIn PDF document text
    • http://zinuxuf.22web.org/biogas_plant_in_marathi.pdfIn PDF document text
    • http://blancer.xyz/zesojezapogawowikepafutjh39x.pdfIn PDF document text
    • http://smartradiobf.ru/chemistry_quiz_questions_and_answers_multiple_choice2g2xg.pdfIn PDF document text
    • http://trelon.fun/fovanekik8hu55.pdfIn PDF document text
    • http://antileqphh.site/mohawk_commercial_carpet_warrantyrov8c.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/fikuvine/draw_horizontal_line_in_android_programmatically.pdfIn PDF document text
    • https://s3.amazonaws.com/wetevali/89759055754.pdfIn PDF document text
    • http://jujimewukekupur.epizy.com/rowexasom.pdfIn PDF document text
    • http://pesaforasipu.epizy.com/tawamu.pdfIn PDF document text
    • https://s3.amazonaws.com/zalomi/mortgage_amortization_schedule_spreadsheet_template.pdfIn PDF document text
    • https://s3.amazonaws.com/zumomasugipeno/21283496643.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_off0000e265.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE265 5500 bytes
SHA-256: b5c939a1c16ce7a424ba0be74591133bc6c4e2e2917629b7656ad6c7fc5efd91
font_01_sfnt_off0000f4e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4E8 10648 bytes
SHA-256: 36337d97a276ae7df4e7dd9504d41c10f274f02b150f97e0a194018e126f0b50

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