Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec65e79f7dd8f10c…

MALICIOUS

PDF

67.7 KB Created: 2021-02-20 05:13:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: de4f64e23185fdf5483c00936235ca7c SHA-1: 924ff746a05622fbcc0216588a40194a9f0eed67 SHA-256: ec65e79f7dd8f10c48b3e87acbea2eb8ef034eb32a74f008508239bcf6acaf35
156 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to other PDF files, indicating a link farm strategy designed to deceive users into downloading potentially malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. While no scripts were directly extracted, the PDF structure and numerous external links are indicative of a phishing lure, potentially leading to further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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://baarspo.ru/aws?utm_term=garuda+puranam+telugu+book+pdf+free+download PDF link annotation
    • http://topsale.pro/android_wear_app_tutorial3n2c2.pdfIn PDF document text
    • https://luzenesezenobo.weebly.com/uploads/1/3/5/3/135307250/pususul-nefujula-vivuvadi.pdfIn PDF document text
    • https://libadelalisam.weebly.com/uploads/1/3/4/5/134579317/defogikuwo_jizolizotuni.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/daraniwekamidir/mobijusegitolu.pdfIn PDF document text
    • https://s3.amazonaws.com/varolexexus/aadukalam_tamil_songs_starmusiq.pdfIn PDF document text
    • https://s3.amazonaws.com/lorerexeg/jenajojowan.pdfIn PDF document text
    • http://fazawafelu.rf.gd/ak_driver_license_lookup_mn.pdfIn PDF document text
    • https://s3.amazonaws.com/gebukil/tamilrockers_hd_tamil_movies_2019.pdfIn PDF document text
    • http://dinotowiteve.rf.gd/kijim.pdfIn PDF document text
    • http://xowepiguxuwo.epizy.com/jimovix.pdfIn PDF document text
    • https://s3.amazonaws.com/posufij/skype_old_version_7._0_free.pdfIn PDF document text
    • https://s3.amazonaws.com/juvosi/d_mannose_chair_conformation.pdfIn PDF document text
    • https://s3.amazonaws.com/sonutopexaramuf/68541353676.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_off0000cca9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCA9 5508 bytes
SHA-256: 0422318135be1829f283e451e324479d30c965388fc9588503a1e49dc0f99163
font_01_sfnt_off0000df68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF68 10148 bytes
SHA-256: 79750747fa7f078ab089c46f03b6c803751cfacae703691e5a7cbba263811ba3

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