Malicious PDF — malware analysis report

Static analysis result for SHA-256 12eca2ebe8164863…

MALICIOUS

PDF

78.4 KB Created: 2021-04-07 10:48:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: df6e83006d295a7be43fcf96f4e2bdba SHA-1: d89764d846c690044a6982649c374ca2fdebd504 SHA-256: 12eca2ebe816486339245e65f4fd21fc07cb00b6947adf2728c5d2ccec2faf68
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to 'https://midufefew.ru/award?keyword=beniseed+production+pdf', which is a strong indicator of malicious intent, likely for phishing or downloading further payloads. The document body is heavily obfuscated and does not provide clear textual clues, but the presence of the malicious URL and the detection signatures strongly suggest a phishing or malware distribution attack.

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://midufefew.ru/award?keyword=beniseed+production+pdf
    • https://wejorawifaloju.weebly.com/uploads/1/3/4/4/134458418/3024582.pdf
    • http://winoorama.fun/76605622103ev4s9.pdf
    • http://upgrade4me.com/331500489092o5c9.pdf
    • http://lefefegibilapo.22web.org/brothers_telugu_movie_free.pdf
    • https://towipikegogu.weebly.com/uploads/1/3/4/6/134690187/6839662.pdf
    • http://slamelina.website/zefuziligiregomidelovaxerqt2qp.pdf
    • http://tufepuwaw.iblogger.org/angular_7_tutorial_franais.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://mitufesidu.epizy.com/5th_grade_math_problems_worksheets.pdf
    • http://rikukevez.rf.gd/pudaruwasuxegotusetowodan.pdf
    • https://s3.amazonaws.com/jezekemunidup/90853638670.pdf
    • http://nevurewajarip.epizy.com/kejuxoduralomanetubazubed.pdf
    • http://gexipodadika.rf.gd/july_2020_calendar_template.pdf
    • https://s3.amazonaws.com/jumedemimo/74757105272.pdf
    • https://s3.amazonaws.com/jenagubadopi/lutujo.pdf
    • https://uploads.strikinglycdn.com/files/dc9ff882-0716-4bea-94f6-24f62da545f1/84054838304.pdf
    • https://s3.amazonaws.com/dugibabafod/96174221934.pdf
    • http://merapuw.epizy.com/balloon_rocket_lab_worksheet_answers.pdf
    • https://s3.amazonaws.com/zupenafud/vewimerilupepuxosapozos.pdf
    • http://bixowufufo.rf.gd/lyrics_ed_castle_on_the_hill.pdf
    • https://uploads.strikinglycdn.com/files/57d2f7d6-3fac-4322-99dc-cec85302a5a7/joyce_meyer_battlefield_of_the_mind_daily_devotional.pdf
    • https://uploads.strikinglycdn.com/files/0fcf9608-3174-4201-b0fa-0ab65fc4ab33/what_is_kinetic_energy_in_chemistry_in_simple_words.pdf
    • http://renoxefi.epizy.com/wuvezolidatojokar.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_off0000f50a.bin
43a855a4baeef20148140287cbe9591bbcbc06adc54d8157c2620091ca08056b
pdf-font-stream PDF embedded font (sfnt) at offset 0xF50A 4956 bytes
font_01_sfnt_off000105ff.bin
b962445884885d5114039c35e83348ed2c65a3e89efdb965ddbea92aebb0d1b5
pdf-font-stream PDF embedded font (sfnt) at offset 0x105FF 11296 bytes