Malicious PDF — malware analysis report

Static analysis result for SHA-256 d84c330446bf17d9…

MALICIOUS

PDF

71.9 KB Created: 2021-03-17 19:09:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7f4d28d9c1c2cdf5baf0e25b6706bb46 SHA-1: 11747731287b34139347c8c5b24b77e7b7d1fecf SHA-256: d84c330446bf17d9ab58a8de8f93f09f95e26cba576db7b994fdc3af5f2cf417
104 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL pointing to a site offering a cracked application, likely intended to trick users into downloading malware. The presence of a visual download button further supports the phishing lure.

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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://fokemale.ru/wix?keyword=drastic+ds+apk+cracked
    • http://ch-redirect.icu/fumadewukoxijixumuxowujah5h75.pdf
    • http://luzibis.iblogger.org/antifertility_activity_of_medicinal_plants.pdf
    • https://cdn.sqhk.co/gudijupimeb/cpFt6ge/vip_access_app_store.pdf
    • https://cdn.sqhk.co/vemetafije/TjhjcpH/90276507040.pdf
    • https://cdn.sqhk.co/lodikorep/Azhghha/53613178640.pdf
    • https://lutomired.weebly.com/uploads/1/3/5/3/135316507/87b8838e79019.pdf
    • http://rowikisiwub.22web.org/56319581257.pdf
    • http://fitokapss.xyz/jimmy_choo_shoe_sizing_guide81a3g.pdf
    • http://mowuvivof.22web.org/que_alimentos_tienen_mas_lectinas.pdf
    • http://limecash.xyz/10271187647wy0cs.pdf
    • http://pubgucbayim.com/posawapifunetivilajig1bbj.pdf
    • https://cdn.sqhk.co/xixujipum/gf1hhid/92633374744.pdf
    • https://bokesaxigalul.weebly.com/uploads/1/3/0/7/130776824/fozokoxivasamixatu.pdf
    • https://cdn.sqhk.co/vojofarakiva/gLjdzja/super_pinball_master_review.pdf
    • http://instapriz.online/6155927932iwtmw.pdf
    • http://itchia.space/gididinudugizih6q11.pdf
    • http://tvoeobrazovanie.fun/ielts_result_sheet1ksd2.pdf
    • https://rawoxoduzipuk.weebly.com/uploads/1/3/2/3/132302868/1337057.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://jipizizesotexo.rf.gd/dujuxe.pdf
    • http://duletufazipup.epizy.com/complete_quantitative_aptitude_formulas.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_off0000db29.bin
e5b824e7b8e68f668963ef4f52dbdbcf818805b991de422ec571a66760a79b67
pdf-font-stream PDF embedded font (sfnt) at offset 0xDB29 5096 bytes
font_01_sfnt_off0000ec94.bin
290d8c9414342ab53da09267fefaba57bd783909961f354295ff09845a27bc52
pdf-font-stream PDF embedded font (sfnt) at offset 0xEC94 11236 bytes