Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb4c4aa57fa78260…

MALICIOUS

PDF

70.6 KB Created: 2021-02-14 05:42:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: d2c2204ea6eea81e166b925e276aaeb6 SHA-1: 4c8768ced25002862e5d05ce67e47a819448eb97 SHA-256: eb4c4aa57fa78260254372f3683f448eb764babbf7e8121f4da50c7fc447d865
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is identified as a malicious PDF by ML classifiers and ClamAV, with a high risk score. It contains an embedded URL that directs users to a suspicious domain, likely for phishing purposes. The PDF structure and embedded content suggest an attempt to disguise malicious intent, possibly by exploiting PDF vulnerabilities or social engineering tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/wix?keyword=southport+local+history+society PDF link annotation
    • https://cdn.sqhk.co/difakezil/TmAjgz0/46674269761.pdfIn PDF document text
    • http://gonzo-3d.com/rojabekaxiwabaniwudozif9dqe1.pdfIn PDF document text
    • https://cdn.sqhk.co/zetobazox/dolOicP/36423322523.pdfIn PDF document text
    • https://cdn.sqhk.co/xeposetuge/iaih7gg/66319129297.pdfIn PDF document text
    • https://cdn.sqhk.co/kelopifagisu/4hihejd/water_glass_music_definition.pdfIn PDF document text
    • http://winwites.space/transformers_cyberverse_deviantart7k5p3.pdfIn PDF document text
    • https://cdn.sqhk.co/dajebala/WrKYgd1/95831421414.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384650/normal_5fe6b309337c3.pdfIn PDF document text
    • http://feyakast.online/kikusuwozej8lsc.pdfIn PDF document text
    • https://cdn.sqhk.co/xunijejozi/uYnDAhf/one_punch_man_wallpaper_cave.pdfIn PDF document text
    • http://excellent-spb.ru/william_greene_econometric_analysisn40ux.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/pugomonapoxuxe/xarorawamotumuguz.pdfIn PDF document text
    • https://s3.amazonaws.com/wetevali/flash_card_template.pdfIn PDF document text
    • https://s3.amazonaws.com/vipinib/omron_heartguide_watch_brings_blood-_pressure.pdfIn PDF document text
    • https://s3.amazonaws.com/babetafaperaxov/the_interlopers_discussion_questions_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/lotibabakuj/carlos_gardel_biografia.pdfIn PDF document text
    • https://s3.amazonaws.com/fadadedezeker/buwejebufibejivibiv.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_off0000d856.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD856 5228 bytes
SHA-256: 169e211ee3f96cf2ed0d174f27db0d33dee34e1ad286bf8ef1beaf421f221b23
font_01_sfnt_off0000ea1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA1D 10424 bytes
SHA-256: 2e7faabcebdcfec963806c68590f003e5c4b0ad26b4d9ffe78180622418510d6

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