Malicious PDF — malware analysis report

Static analysis result for SHA-256 0764e7c5ccff6ad2…

MALICIOUS

PDF

73.0 KB Created: 2021-05-04 08:08:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 53e1477a656f011a7ae801670f92f1f1 SHA-1: e29c929ec0f5257fe177bda834d2ed9aba94e4c5 SHA-256: 0764e7c5ccff6ad243f6fe07fe5d74bc2e85d121ddf081addd767f78fc91ab83
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The sample was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, with one pointing to a disposable hosting domain, suggesting a phishing or credential harvesting attempt. The PDF structure and embedded links are consistent with a phishing lure, likely intended to direct users to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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://jacksth.ru/strik?utm_term=vocabulary+latin+and+greek+roots+unit+4 PDF link annotation
    • http://vegofejolafud.mygamesonline.org/65516249922.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368975/normal_60034e127d3e8.pdfIn PDF document text
    • http://bimonetejatoleb.mygamesonline.org/92920728327.pdfIn PDF document text
    • http://luxuwum.mypressonline.com/cdf_to_example.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481424/normal_602e6056e082f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://5c817321-7c0c-448b-959d-deb1da9fd788.filesusr.com/ugd/19103d_8e9d759b392649f1b9a522abc986921d.pdf?index=trueIn PDF document text
    • http://finosumu.rf.gd/cloudy_with_chance_of_meatballs_3_release_date.pdfIn PDF document text
    • https://d71fc03c-aea6-48f7-a990-8afffb22108d.filesusr.com/ugd/3de8a6_bd83b452594b429fbe85c51939afce15.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/semuxemakaw/euphoria_bts_piano_sheet_music.pdfIn PDF document text
    • http://zodinedew.epizy.com/certificate_formats_free_download.pdfIn PDF document text
    • http://zukeligo.rf.gd/chick_fil_a_nutrition_info_mac_and_cheese.pdfIn PDF document text
    • http://luxupuxud.myartsonline.com/43029680307.pdfIn PDF document text
    • https://s3.amazonaws.com/jakujakula/whats_a_good_credit_score_credit_karma.pdfIn PDF document text
    • https://e31b828f-dd5d-4b35-abba-5777d5fc2ed6.filesusr.com/ugd/56a8cc_32480c06546b43ee927dd4b6d2340e82.pdf?index=trueIn PDF document text
    • http://nisifibuvez.epizy.com/17256754743.pdfIn PDF document text
    • https://201a0bc5-0eb3-4135-8969-828875a6b07d.filesusr.com/ugd/607883_bd20255af93c486d909b1e59de355f83.pdf?index=trueIn PDF document text
    • http://repewuwutopin.rf.gd/45429932064.pdfIn PDF document text
    • https://50b7e5d6-ab0e-41ff-bbcb-47d024e5c277.filesusr.com/ugd/45d8ab_781de9ddfe5841edb3585aeed56d4ac2.pdf?index=trueIn PDF document text
    • http://nikulozorar.epizy.com/is_there_going_to_be_a_stargirl_2_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/mesotodimus/adobe_photoshop_camera_raw_free.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifawuvawot/20396650071.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_off0000d9ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9CE 5464 bytes
SHA-256: ffd91b28c91d30bd5548b84abee0e01ac906ad9b15d8bcd5bbd0d6e456a6c326
font_01_sfnt_off0000ec82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC82 12968 bytes
SHA-256: e9f48aab26d3552986b7763451cb83d5efec96dcc9ecfdf742dee7a839b34ad1

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