Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b34b7f18cb1de7b…

MALICIOUS

PDF

80.2 KB Created: 2021-04-01 01:06:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 709944013d71e60657af263a0bda4d13 SHA-1: c282293c800b83f8d91be628b0ad5bf3a88914f6 SHA-256: 7b34b7f18cb1de7be67ea4a5c92181b5226b8db27768c2acc0d11f8d27d276fd
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a suspicious domain, identified by heuristics and a machine learning classifier as malicious. ClamAV also detected it as a phishing trojan. The document body, though heavily obfuscated, suggests a lure related to 'waste to energy technology' 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://gimoguvi.ru/award?keyword=waste+to+energy+technology+pdf
    • https://cdn-cms.f-static.net/uploads/4455914/normal_60331ae8aea38.pdf
    • https://static.s123-cdn-static.com/uploads/4365628/normal_5ff4cc32da287.pdf
    • https://cdn-cms.f-static.net/uploads/4369911/normal_600bad3d4d87d.pdf
    • https://cdn-cms.f-static.net/uploads/4402503/normal_5fe652a814577.pdf
    • http://mamafiposorugul.sportsontheweb.net/ghatna_chakra_purvavlokan_series_in_english.pdf
    • http://mowefopovog.mywebcommunity.org/nawotefixonujuk.pdf
    • https://cdn-cms.f-static.net/uploads/4495974/normal_605649210af48.pdf
    • https://cdn-cms.f-static.net/uploads/4418574/normal_6049dabf93fe1.pdf
    • https://cdn-cms.f-static.net/uploads/4388289/normal_5fd92ace73e47.pdf
    • http://bimovixexena.scienceontheweb.net/anthony_santos_popurri_descargar.pdf
    • https://cdn-cms.f-static.net/uploads/4481286/normal_600c567a06369.pdf
    • http://coins24h.com/full_information_about_computer_engineering5y78q.pdf
    • http://fizebiredasibi.mypressonline.com/89169536036.pdf
    • https://static.s123-cdn-static.com/uploads/4448985/normal_5ffeeca5694db.pdf
    • https://cdn-cms.f-static.net/uploads/4368238/normal_6021f208bfd0a.pdf
    • http://foodguideblog.com/nufixiligobarcynaa.pdf
    • http://rejemezurufoveg.mywebcommunity.org/fogasigebolufusigox.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/gewuwasi/puxixejajoxubudisufebeso.pdf
    • https://s3.amazonaws.com/lomuper/what_is_dorian_in_sabrina.pdf
    • https://s3.amazonaws.com/lorifawuvawot/20345275036.pdf
    • http://miganuvag.myartsonline.com/weider_pro_3200_home_gym_price.pdf
    • https://s3.amazonaws.com/tubupejevomo/android_status_bar_icon_circle_with_line.pdf
    • http://fojakosi.atwebpages.com/bulidojobaka.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_off0000fc78.bin
fcc3bf5fd84a13d802e8d93997cefe26d0c520c40d42bccb718980684fbfbef6
pdf-font-stream PDF embedded font (sfnt) at offset 0xFC78 5532 bytes
font_01_sfnt_off00010f5d.bin
34dd576eef8fa112f1d31cc2bc9842c166b81148313d5904171e4f72c803b3fa
pdf-font-stream PDF embedded font (sfnt) at offset 0x10F5D 10652 bytes