Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea5e305e236c8c33…

MALICIOUS

PDF

75.9 KB Created: 2021-04-01 18:44:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1d9939602524f370de114f83bb3a4841 SHA-1: b5e703b04461abe7b607e0b856f08eecbc4a224b SHA-256: ea5e305e236c8c3396f408966f3e3fb9f2f7eaba1bc04e055fb9c8108a848742
96 Risk Score

Malware Insights

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

The PDF file contains a lure related to a holiday, which is a common tactic for phishing or malware distribution. It embeds external URIs, including one pointing to 'golowaki.ru', likely intended to redirect the user to a malicious site. The ClamAV detection and ML classifier strongly indicate malicious intent, consistent with a phishing or trojan delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://golowaki.ru/aws?utm_term=que+dia+%25C3%25A9+o+feriado+de+carnaval+2021
    • http://pupijepu.22web.org/depapumujuwelaje.pdf
    • https://cdn.sqhk.co/puwukuwos/jTibxjb/apprentice_electrician_jobs_ireland.pdf
    • https://cdn.sqhk.co/vesagivara/mgdECid/minerals_are_needed_for.pdf
    • https://cdn.sqhk.co/rijujonakuje/6sJqHie/ninety_six_primary_school_supply_list.pdf
    • http://lopixerirerenex.mywebcommunity.org/introduction_to_archegoniate.pdf
    • http://vedevejunogi.iblogger.org/xopapisavodapa.pdf
    • https://static.s123-cdn-static.com/uploads/4377101/normal_5fc88af876ecc.pdf
    • http://saniwofixapu.mygamesonline.org/popular_american_slang_words_and_phrases.pdf
    • http://dewodalaluw.mygamesonline.org/79848128104.pdf
    • https://static.s123-cdn-static.com/uploads/4419003/normal_5ffe0921cfeea.pdf
    • http://logawedulukudan.mywebcommunity.org/resistance_band_exercises_for_chest_and_shoulders.pdf
    • https://cdn.sqhk.co/bulegumu/h4gTmIh/93704998914.pdf
    • http://rumurel.mywebcommunity.org/fukomudokozefexinivunibuj.pdf
    • https://cdn.sqhk.co/wixexozesila/jifjj7P/kimekamevekexanejire.pdf
    • https://cdn.sqhk.co/momujolo/ehhUhjU/witch_weapon_game_tier_list.pdf
    • https://cdn.sqhk.co/letinumi/iXgcRhf/15492818071.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://wuxokap.rf.gd/what_color_eyes_does_jensen_ackles_have.pdf
    • http://jefevuxivux.epizy.com/nowufunijezumun.pdf
    • http://fowimifefezujo.myartsonline.com/23263116170.pdf
    • http://lodusebivepakef.epizy.com/bus_dj_song.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_off0000e73d.bin
bc6353777e49d9725785a055ff47584911028de7d63599375554d8cd4f41c9b2
pdf-font-stream PDF embedded font (sfnt) at offset 0xE73D 5424 bytes
font_01_sfnt_off0000f98f.bin
411d4977777fb3286906acf5a8e426a01db9de246fa51333d993f4134736b81f
pdf-font-stream PDF embedded font (sfnt) at offset 0xF98F 12768 bytes