Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb8e4f71c15aa337…

MALICIOUS

PDF

100.9 KB Created: 2021-03-28 18:39:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: ec174ca378c647f05057d5b68303cd27 SHA-1: dd1cfde0c078e8fb679e65a7f4f93a428afc78bf SHA-256: eb8e4f71c15aa3370a04e28bb065f7dcb5f7ce0f8187cd4e7c9ff81958ddbf28
156 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan' and a high ML score. It contains a large number of external links, as indicated by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. While no scripts were explicitly extracted, the presence of numerous external links suggests an attempt to redirect users to malicious or SEO-manipulated content, potentially for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/award?keyword=sejarah+kota+palu+pdf PDF link annotation
    • http://rubonupulaboti.22web.org/probability_density_function_formula.pdfIn PDF document text
    • http://vafutixon.22web.org/xolemuwokegojiju.pdfIn PDF document text
    • https://cdn.sqhk.co/gisusisabez/XsALkN5/62522190760.pdfIn PDF document text
    • https://kurakozizuvev.weebly.com/uploads/1/3/2/6/132681999/6138915.pdfIn PDF document text
    • https://cdn.sqhk.co/zojixemem/gieilgf/duracell_rechargeable_aa_batteries_2500mah.pdfIn PDF document text
    • http://pabufit.22web.org/arraylist_listview_android_example.pdfIn PDF document text
    • http://wivadanege.iblogger.org/central_pneumatic_air_compressor_parts_model_61454.pdfIn PDF document text
    • http://waxawazurutane.22web.org/bittorrent_apk_for_windows_10.pdfIn PDF document text
    • https://linugotozoluj.weebly.com/uploads/1/3/4/6/134662393/7695529.pdfIn PDF document text
    • https://xusawoji.weebly.com/uploads/1/3/0/7/130739635/8defa73356.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://renureva.epizy.com/glioblastoma_multiforme_5_year_survival.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxomigo/bartender_etiquetas_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/wegugus/nibelu.pdfIn PDF document text
    • https://s3.amazonaws.com/womirofop/24513849126.pdfIn PDF document text
    • http://fogiwomagivizu.rf.gd/40954340552.pdfIn PDF document text
    • https://s3.amazonaws.com/wibedubosateg/insinkerator_disposal_splash_guard.pdfIn PDF document text
    • http://bikilut.epizy.com/werezoruzaro.pdfIn PDF document text
    • https://s3.amazonaws.com/litunux/bosch_nexxt_500_plus_series_washer_capacity.pdfIn PDF document text
    • http://faganelatoke.epizy.com/samsung_6_series_50_inch_tv_review.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_off00014aa9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14AA9 5192 bytes
SHA-256: b3066916b1e301e5b1d76c1d2b075f0507579b45fde03c2d70d49a3c9071779c
font_01_sfnt_off00015c50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15C50 12020 bytes
SHA-256: 7bdc05bc7ec41226fff9ba96205f71a129d1054ef42cb7d3cb78db38862af1d2

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