Malicious PDF — malware analysis report

Static analysis result for SHA-256 a63d0fdd9c020b25…

MALICIOUS

PDF

79.0 KB Created: 2021-03-04 05:27:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 65dd20306c07f524ef2f5b78b4447f41 SHA-1: eca38461f327520dbe4214185ce6b8e35f502dc8 SHA-256: a63d0fdd9c020b25bd6bbcb5e1844b488e9c6ed89c899cc514928995977a9c31
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, contains text fragments that suggest a lure related to 'lockpickinglawyer stuff'. No scripts were extracted, but the presence of embedded URIs and the overall detection suggest a phishing or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jumiwimov.ru/123?utm_term=lockpickinglawyer+stuff+made+here+lock
    • http://wizudaneku.iblogger.org/macbeth_study_guide_questions_and_answers.pdf
    • https://bapefakujina.weebly.com/uploads/1/3/4/4/134483882/a4a789f3.pdf
    • https://wizitizisib.weebly.com/uploads/1/3/4/3/134361222/8489088.pdf
    • http://gordei2d.com/580067982544kcq.pdf
    • https://falatunasozenu.weebly.com/uploads/1/3/4/7/134762474/jiwaxerujidigox.pdf
    • http://present-mag.ru/experiment_hypothesis_worksheetnezl8.pdf
    • https://molisepav.weebly.com/uploads/1/3/5/3/135347716/mugunumax-narorebubir-zetiti-boxujewizafag.pdf
    • http://domavera.ru/wupixenuwibubufimapatono7hr.pdf
    • https://static.s123-cdn-static.com/uploads/4413843/normal_5fcf4a8b97699.pdf
    • https://cdn-cms.f-static.net/uploads/4383327/normal_6024129462a3a.pdf
    • http://thecet.xyz/whats_the_money_cheat_code_for_gta_56l9o6.pdf
    • http://idealica-uficiale.website/vusexitodomolinamemalelh3usb.pdf
    • http://form-lnstagramverifiedbadges.com/present_perfect_simple_wiczenia_klasa_68nfrj.pdf
    • http://leopards.space/wezenavironofosotuxigula36gf4.pdf
    • http://guitar.su/laravel_php_framework_tutorial_for_beginnersqn2h8.pdf
    • http://eagleaff.com/64173943133htzdj.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fituxulilofe.epizy.com/21892321874.pdf
    • http://xawoforusur.epizy.com/night_sky_with_stars_images_free.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_off0000f801.bin
e7eecd4750efc3494eb9579adfc0920e5ec1b9d23d63332abd67a6587328989f
pdf-font-stream PDF embedded font (sfnt) at offset 0xF801 5768 bytes
font_01_sfnt_off00010ba2.bin
98454516f02bee1579820d15e3d7e219087c414336b59727bf0e5ab5e484e058
pdf-font-stream PDF embedded font (sfnt) at offset 0x10BA2 10368 bytes