Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f07a86a1b83a8e1…

MALICIOUS

PDF

76.7 KB Created: 2021-03-13 17:00:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8f04efcc4dbf6a5aba79743331ef8b45 SHA-1: da60226163205fb1fa65c1d90146cad44311f8cb SHA-256: 8f07a86a1b83a8e18221ac7fad557ffa1e028a1703b6266ac7d1304fda8ec8c9
96 Risk Score

Malware Insights

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

The PDF file was detected 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 host a phishing or malware payload. The document body, though heavily obfuscated, suggests a lure related to an 'enlightenment worksheet', aiming to trick the user into visiting the malicious URL.

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://botokaw.ru/wix?keyword=the+enlightenment+worksheet
    • http://shoppermarket.online/toastmasters_table_topics_evaluation_sheetxqk5g.pdf
    • http://kfnwejfnkwheklf.space/the_great_cat_massacrephox7.pdf
    • http://votixibutiro.medianewsonline.com/asbestosis_fisiopatologia.pdf
    • http://golixudib.mypressonline.com/blades_in_the_dark_espaol.pdf
    • https://cdn-cms.f-static.net/uploads/4378641/normal_601f2b66f0f4f.pdf
    • http://lngcliente.com/71237366673jq32k.pdf
    • https://static.s123-cdn-static.com/uploads/4365662/normal_5fd097577833d.pdf
    • http://mkr-olimp.info/capitalization_and_punctuation_worksheet_answersd6064.pdf
    • https://cdn-cms.f-static.net/uploads/4457279/normal_5fd645168b314.pdf
    • http://iglivesupportteam.com/xapipatodorepuxc6x1u.pdf
    • https://cdn-cms.f-static.net/uploads/4389581/normal_5fdb56044b3a6.pdf
    • http://golosa-spasibo.ru/snare_drum_solo_music9tv0o.pdf
    • http://eagleaff.com/contractor_authorization_form_city_ojgtkp.pdf
    • http://adanakebap.org/electron_configuration_and_orbital_diagram_worksheetuy6x3.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/f04610b9-66e5-436c-a8d7-7cb6d231b25e/troilus_and_criseyde.pdf
    • https://a694a867-b0fa-45cd-b082-7f9abf80b1a7.filesusr.com/ugd/430cb2_fbe49e5f4b7a40fcae196425ddc70334.pdf?index=true
    • https://uploads.strikinglycdn.com/files/c14ad11f-bffa-438c-8191-28a0699f521c/36346715197.pdf
    • https://5984e891-aecd-43e6-866f-efdb297c9c35.filesusr.com/ugd/403565_38041798f5c64705894f344110135720.pdf?index=true
    • 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_off0000ee86.bin
051991687a72dcc7ff8467f8073abc93f911f429487247618776ca777ce304c4
pdf-font-stream PDF embedded font (sfnt) at offset 0xEE86 4996 bytes
font_01_sfnt_off0000ff6a.bin
9ded69e39c513189779b84140dbfdb0bbcbb7e91390c9037f3e45ac1e9f4b79d
pdf-font-stream PDF embedded font (sfnt) at offset 0xFF6A 11528 bytes