Malicious PDF — malware analysis report

Static analysis result for SHA-256 277e8b5bbb810238…

MALICIOUS

PDF

81.8 KB Created: 2021-03-22 18:10:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7f48af40b8558196c6eecf0cd3dc8d24 SHA-1: 25189fb3f71d1b392678d43fb50af429a891cacb SHA-256: 277e8b5bbb8102383a119a897d96f121eb7dbf9d22dd17f2af42f385e1ce2d3f
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ML classifiers and ClamAV. It contains an embedded URI pointing to 'fokemale.ru', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to 'Elfen lied lilium cello sheet music'. No scripts were extracted, but the presence of external URIs and the overall malicious verdict indicate an attempt to redirect the user to a harmful resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://fokemale.ru/123?utm_term=elfen+lied+lilium+cello+sheet+music
    • http://gloslides.com/3102481112c2udv.pdf
    • https://cdn.sqhk.co/rusobotakox/gcMKZEn/56987561045.pdf
    • https://cdn.sqhk.co/petebeki/jSr4xmZ/buwomikokogi.pdf
    • http://xepuxesadara.mypressonline.com/rufumuxosuzumeda.pdf
    • https://cdn.sqhk.co/rokijatu/hgCgfhd/list_of_guided_reading_level_f_books.pdf
    • https://cdn.sqhk.co/laguladori/jhidghf/kolkata_weather_report_for_next_10_days.pdf
    • http://gupiduwexe.22web.org/41625368153.pdf
    • http://luxibenuguk.getenjoyment.net/compound_complex_sentence.pdf
    • https://cdn.sqhk.co/bogovureg/drZuXzz/messenger_sms_mms_app_apk.pdf
    • http://top-odejda.com/72968102068ezdrf.pdf
    • http://pafugiwerokamez.iblogger.org/58687502720.pdf
    • http://anbieterbewertung-autoscoutch.com/wills_eye_hospital_emergency_roombccz7.pdf
    • https://cdn.sqhk.co/vugomupuzisa/hi2ihpA/gufuwebapudodosizirevek.pdf
    • http://wejuveziwep.mypressonline.com/17971341204.pdf
    • https://cdn.sqhk.co/tudobele/7ygfhty/28953693183.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/nisiwanolom/78194454948.pdf
    • https://s3.amazonaws.com/magapeguwabe/sabbatical_leave_template_letter.pdf
    • https://s3.amazonaws.com/jadudusujuje/limited_company_accounts_template_word.pdf
    • http://nisetekotixob.myartsonline.com/autoestima_conceptos.pdf
    • http://dosekidonara.epizy.com/rulawoponemu.pdf
    • https://s3.amazonaws.com/tosego/dejawonomewunasiriside.pdf
    • http://finubovuputok.epizy.com/anti_inflammatory_diet_foods_to_avoid.pdf
    • http://bironibubelad.rf.gd/cules_son_las_principales_caractersticas_de_un_texto_expositivo_brainly.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_off0000fdba.bin
67623525acf6873a58e4741bccaa0d8982ea9cabb5578b5bfe4ddcebed8884aa
pdf-font-stream PDF embedded font (sfnt) at offset 0xFDBA 4912 bytes
font_01_sfnt_off00010e54.bin
52a8f0c39b2a4330bee8d6184c204c4e98ba83e72717ba6c818594b6578cbc8f
pdf-font-stream PDF embedded font (sfnt) at offset 0x10E54 12616 bytes