Malicious PDF — malware analysis report

Static analysis result for SHA-256 49aea0cc0fa906c4…

MALICIOUS

PDF

149.2 KB Created: 2021-02-19 07:18:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 7f66b0d2f85946f7bd6ec70ab5d1cdcf SHA-1: 322e9a24f4e53b51cb22a17a3fa944c3cc55fb7a SHA-256: 49aea0cc0fa906c45f3512688a2fbf6747393e1c523eaf609cef8eeba18c6d88
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many hosted on disposable domains, and is flagged by ML classifiers and ClamAV as malicious. The document body, though heavily obfuscated, appears to be a lure related to a specific vehicle manual, suggesting a phishing or malware distribution attempt. The presence of external URIs and link farm characteristics indicates an effort to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://jottigo.ru/123?utm_term=ford+explorer+2002+transmission+manual PDF link annotation
    • https://pevaluxuduta.weebly.com/uploads/1/3/4/5/134502983/3011588.pdfIn PDF document text
    • https://cdn.sqhk.co/gejupajo/ikij8gi/guzixunubuselonulumarom.pdfIn PDF document text
    • https://xesusilinani.weebly.com/uploads/1/3/0/8/130874458/sisalew-vezuriwizuxopor-nomutuxenube-roxaxixutozi.pdfIn PDF document text
    • https://lemorixumo.weebly.com/uploads/1/3/4/7/134748879/jijasex-wunurotog-xijiro.pdfIn PDF document text
    • https://mifugitosa.weebly.com/uploads/1/3/4/6/134631290/kupajedivon-neronumoxuluf-vutibibup.pdfIn PDF document text
    • https://merotulup.weebly.com/uploads/1/3/4/0/134000288/durepanezulovene.pdfIn PDF document text
    • https://tevupiju.weebly.com/uploads/1/3/4/8/134865653/patamowesesi_fojadelujiwi_sasugubowato.pdfIn PDF document text
    • https://kexinebig.weebly.com/uploads/1/3/4/3/134338338/perixepizafovodig.pdfIn PDF document text
    • http://tekdouche.xyz/ccdc9b_statutory_declaration_form8z3r1.pdfIn PDF document text
    • https://nulixosur.weebly.com/uploads/1/3/4/3/134311840/4358148.pdfIn PDF document text
    • http://drive4mclanemilwaukee.com/algebra_equations_worksheet_grade_6e1nie.pdfIn PDF document text
    • https://cdn.sqhk.co/vanewano/05igPjc/video_download_browser_app_ios.pdfIn PDF document text
    • https://mujolimu.weebly.com/uploads/1/3/4/8/134868529/ff854d6bbf3.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/nelizenejakarug/tokijipu.pdfIn PDF document text
    • http://vuropomap.epizy.com/chelated_form_meaning.pdfIn PDF document text
    • https://s3.amazonaws.com/nitizobuv/birthday_girl_penelope_douglas_espaol.pdfIn PDF document text
    • https://s3.amazonaws.com/mesixadelomomo/pediatric_heart_failure_guidelines.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_off0001eab8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1EAB8 5404 bytes
SHA-256: bd60461d4f2047f68b912e5320aa6f3a7720ed6e8375a8cced2deec2e82f4a5b
font_01_sfnt_off0001fd04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1FD04 17028 bytes
SHA-256: 953b07e66825b19d2c70d6f1db826fc15fa93bb60f4c7295b588bdd588c17ba6
font_02_sfnt_off0002320b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2320B 16060 bytes
SHA-256: ae97ebdbf5cb6679ee3ae7f6f8963da9ec2437ada1f672a33085bc8cbe806833

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