Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed58e969f58cb173…

MALICIOUS

PDF

114.8 KB Created: 2021-02-21 14:19:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 0d73b08d771345769400fc787f23042a SHA-1: 4d9cee3508eba3c3fd4ae84ddee0979fd2106bf3 SHA-256: ed58e969f58cb17304e6d10c9d08c3c76e6d5bb5332e0976ecd1f9bb724c61f3
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, 'druttle.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, contains text related to 'John Dewey High School Calendar' and the wkhtmltopdf application, suggesting a lure to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://druttle.ru/strik?utm_term=john+dewey+high+school+calendar PDF link annotation
    • https://cdn.sqhk.co/gafisasiwu/iikijtq/power_level_warrior_2_mod_apk_android_1.pdfIn PDF document text
    • https://waxovidimised.weebly.com/uploads/1/3/4/4/134446407/5a2eeae5a835b.pdfIn PDF document text
    • http://lukezelulevuf.22web.org/python_crash_course_2nd_edition_reddit.pdfIn PDF document text
    • http://swiss-gear-top.xyz/48121151542jbao3.pdfIn PDF document text
    • http://zavarivaemvmeste.ru/avani_avittam_mantras_in_tamil_2018y5o6r.pdfIn PDF document text
    • https://cdn.sqhk.co/durotula/gklBibK/forklift_daily_checklist_uk.pdfIn PDF document text
    • https://mazefitarunakur.weebly.com/uploads/1/3/1/4/131453858/latuvore_kalamisazuvilo_tokenipoge.pdfIn PDF document text
    • https://tuvikeba.weebly.com/uploads/1/3/4/7/134732988/tipuxazofiduza-nemam-jupuwaforigimeb.pdfIn PDF document text
    • https://cdn.sqhk.co/fipimomozuk/spCaid5/starfish_manor_promo_code.pdfIn PDF document text
    • http://cg-designer.xyz/mojebefijepukelalesizilfn5hj.pdfIn PDF document text
    • http://autoport76.online/living_in_harmony_with_nature_meaningskxjf.pdfIn PDF document text
    • https://sexeduju.weebly.com/uploads/1/3/5/3/135327292/tituxakogugeguwob.pdfIn PDF document text
    • https://cdn.sqhk.co/puwukuwos/bEhd8jg/usa_field_hockey_national_futures_championship_2020.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/tixedujegibex/best_live_streaming_tv_app_android.pdfIn PDF document text
    • http://rizinesuri.epizy.com/android_box_for_tv_channels.pdfIn PDF document text
    • https://s3.amazonaws.com/gopuze/17887846202.pdfIn PDF document text
    • https://s3.amazonaws.com/dutimajizowa/administrao_publica_estrategia_concursos.pdfIn PDF document text
    • http://damokoz.epizy.com/bailment_cases.pdfIn PDF document text
    • http://lelizudowekup.rf.gd/20519389775.pdfIn PDF document text
    • http://gibegedagaseri.epizy.com/48445871434.pdfIn PDF document text
    • https://s3.amazonaws.com/legipalofi/63854743113.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED9A 42560 bytes
SHA-256: 831fd4ec25ec0c5fccde3f43a2bbd40ee54e5441ecdcda24c965049c29073159
font_01_sfnt_off00016f8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16F8B 5384 bytes
SHA-256: ca3481c4a1609a6ad413718abb28081f7ff6d8d1d9fb4938ce240cab09e45dd9
font_02_sfnt_off000181ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x181EC 11004 bytes
SHA-256: 4a541d474550b9232eb794b9ae25e33b2406e3f438b080ef9ae8e88c4d5ccbfa
font_03_sfnt_off0001a78d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A78D 16204 bytes
SHA-256: 532315dfdc59b350d447ad91845dd8cc72a836e684f536ab9a4305dc5b53fb8e

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