Malicious PDF — malware analysis report

Static analysis result for SHA-256 48ec8f6ec3ed7b74…

MALICIOUS

PDF

89.2 KB Created: 2021-04-08 02:30:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 19a4f7805ad4592251c09bd08c74573f SHA-1: 91f34547c8b994c028d37dbc84b1d01c15d5c936 SHA-256: 48ec8f6ec3ed7b747c7b3f3c74ad352350787787d515664d61e3716b2f7e69ea
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a malicious domain, likely intended for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be related to '3d shapes powerpoint', suggesting a lure to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://resalured.ru/123?utm_term=3d+shapes+powerpoint
    • https://cdn.sqhk.co/tajudozizif/jV9E1Ad/39338689534.pdf
    • https://cdn.sqhk.co/jinavefajevo/Zv27io4/winklevoss_twins_height_weight.pdf
    • https://cdn.sqhk.co/rujuwawuju/ghjeqVY/porekowitakelugelesab.pdf
    • http://vixegoxufareka.getenjoyment.net/kadebadijejageminifu.pdf
    • http://xopaberowiwin.getenjoyment.net/basic_algebra_problems_with_solutions.pdf
    • http://kakorixow.mygamesonline.org/asus_rampage_v_extreme_wifi_antenna.pdf
    • https://cdn.sqhk.co/bevoletef/ejgQVKK/22377162061.pdf
    • https://cdn.sqhk.co/kipafipigifi/hamjatW/foxetejizopulipu.pdf
    • http://liketime.online/62923769513dz4a1.pdf
    • https://cdn.sqhk.co/fenazijeguk/pgegexp/ludo_champ_download_apkpure.pdf
    • http://zajilakofudo.scienceontheweb.net/80487181986.pdf
    • http://keysecret.ru/gamoxipigenokudob6drd.pdf
    • https://cdn.sqhk.co/jubawiwa/heFhehi/fast_browser_video_apk.pdf
    • http://teatr-art.com/111540651821c5zm.pdf
    • http://znasila.ru/audiocodes_mp-114_fxs_firmwaremp6cd.pdf
    • http://useplafond.xyz/how_to_go_from_factored_form_to_standard_form_polynomial387z4.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/wujanozo/checkbook_balance_template.pdf
    • https://s3.amazonaws.com/serogajugomiji/airport_express_base_station_software_windows.pdf
    • https://s3.amazonaws.com/boxalewijim/after_effects_free_templates_intro.pdf
    • https://s3.amazonaws.com/gelawiweza/phenytoin_davis_drug_guide.pdf
    • https://s3.amazonaws.com/rawesaragegugar/garmin_dash_55_vs_56.pdf
    • https://s3.amazonaws.com/bubeto/jason_stephenson_guided_meditation_manifest.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012128.bin
67b9b6c6a61e98e1552b1a197eef33bba9502bede667484e8dcaebba2c92518f
pdf-font-stream PDF embedded font (sfnt) at offset 0x12128 5176 bytes
font_01_sfnt_off000132c6.bin
4e08e5e4aabeea890c7f7b34316fcf8fb091467ad419e9f2ea107c474892500d
pdf-font-stream PDF embedded font (sfnt) at offset 0x132C6 10900 bytes