Malicious PDF — malware analysis report

Static analysis result for SHA-256 7aa902439ea3da52…

MALICIOUS

PDF

77.9 KB Created: 2021-03-30 13:55:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4f2efac38423ed31ceba2434e5abecb4 SHA-1: 5ad569bbc2974e8ea9a7b003a433dc4c9a4885a6 SHA-256: 7aa902439ea3da52edb295de46630619695b2157f41e8a41a8a217d6f33bd8db
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 designed to trick the user into visiting a malicious site. ClamAV detected this file as Pdf.Phishing.Trojan, and a machine learning classifier also flagged it as malicious. The embedded URL, https://bologen.ru/award?keyword=books+to+read+in+pregnancy+pdf, is presented as a search result, indicating a phishing or social engineering attempt.

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://bologen.ru/award?keyword=books+to+read+in+pregnancy+pdf
    • https://cdn.sqhk.co/nolagutotato/Vgejifr/piwamavovumonupupuwox.pdf
    • http://salleop.xyz/alejandro_steele_new_mexicolcmz1.pdf
    • http://8gusevshop.website/when_should_board_be_capitalizedktfat.pdf
    • https://molesomux.weebly.com/uploads/1/3/2/6/132681378/xotowavimurubasis.pdf
    • https://zavowajasobi.weebly.com/uploads/1/3/1/4/131406950/bugen.pdf
    • https://nowatipuzovatob.weebly.com/uploads/1/3/5/3/135397830/3495079.pdf
    • https://cdn.sqhk.co/rovevexapag/nEnTqhh/perfect_color_roll_3d_free_online.pdf
    • http://littlenat.space/toram_online_luck_mage_leveling_guideihw6q.pdf
    • https://jaxumemiri.weebly.com/uploads/1/3/4/4/134465633/13aac2bac8eef7.pdf
    • https://fakokawiloduku.weebly.com/uploads/1/3/0/7/130775735/2084477.pdf
    • http://unreguezff.rest/1789918058sf97k.pdf
    • http://lofitner.buzz/safalumilulegumedivazar7cvl.pdf
    • http://microbladingcertificationdfw.org/figotelodupejisovudizutfjo1.pdf
    • http://fitokapss.xyz/12029982295h7adh.pdf
    • https://cdn.sqhk.co/ligumorik/bjhliak/power_pop_bubbles_play_online.pdf
    • http://zabavnyi-slon.ru/nakilotavukidamejitevxjh3p.pdf
    • http://idealica-uficiale.website/vitamix_e310_costcolw7a1.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/9b6e3ab5-5e20-4f63-823a-d806ab4a1129/papopefafixubapog.pdf
    • https://uploads.strikinglycdn.com/files/07a8afa0-c539-4947-af73-567f6036a4ca/how_to_set_up_blue_clean_power_washer.pdf
    • https://uploads.strikinglycdn.com/files/91ed8bf8-a21d-48ad-8eb2-f338f1dbda15/94382735751.pdf
    • https://uploads.strikinglycdn.com/files/4e08892c-ca87-4e6d-8a44-8b30bc795dbf/pelir.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_off0000f34a.bin
e5d232aabe66012f4e7c6af3b0198e49372d7f0cc8c2d4ceb98a30d7515719b4
pdf-font-stream PDF embedded font (sfnt) at offset 0xF34A 5508 bytes
font_01_sfnt_off00010629.bin
f9645b55ce12c47653afc1b677a64eb6377fe235e809b576231ea9a0f331a39e
pdf-font-stream PDF embedded font (sfnt) at offset 0x10629 10520 bytes