Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2012e0333f6b356…

MALICIOUS

PDF

88.2 KB Created: 2021-03-09 06:44:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 89805287e28332c4120c5284c870fae3 SHA-1: 46894d82ad778989305aae7782cb390103d3a024 SHA-256: f2012e0333f6b35615fb000b62bce27bb049a473074cbfba0f62476b322a0755
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, exhibiting characteristics of a phishing or malware distribution campaign. The heuristic 'PDF_SEO_LINK_FARM' indicates the presence of numerous external links, with 'https://soxebez.ru/wix?keyword=avast+secureline+activation+key' being a prominent example. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect users to malicious content, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://soxebez.ru/wix?keyword=avast+secureline+activation+key PDF link annotation
    • https://dovasivenumi.weebly.com/uploads/1/3/5/9/135965427/0d346dbd.pdfIn PDF document text
    • https://fologonalufofu.weebly.com/uploads/1/3/4/6/134694067/1406366.pdfIn PDF document text
    • http://indir-kazan.com/application_happy_glass7h7gf.pdfIn PDF document text
    • https://womazineput.weebly.com/uploads/1/3/4/8/134895737/7dec181b.pdfIn PDF document text
    • https://bozetefaz.weebly.com/uploads/1/3/4/7/134733050/5646044.pdfIn PDF document text
    • https://cdn.sqhk.co/duloputemab/Fifgijc/elifoot_2002_download_registro.pdfIn PDF document text
    • https://guxevelanitab.weebly.com/uploads/1/3/4/7/134769418/2870072.pdfIn PDF document text
    • https://nudadisaxoge.weebly.com/uploads/1/3/4/0/134018155/7168323.pdfIn PDF document text
    • https://vupimolafi.weebly.com/uploads/1/3/1/3/131398504/peporibef_wubovuruzoloxag.pdfIn PDF document text
    • http://pokupka.space/54004673829h51gr.pdfIn PDF document text
    • https://cdn.sqhk.co/gatezoru/hdGjchh/survive_said_the_prophet_bridges.pdfIn PDF document text
    • https://nametipij.weebly.com/uploads/1/3/1/1/131164318/wosab.pdfIn PDF document text
    • http://creditreportus.info/gps_app_for_android_phonewfokk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xomepixo/lufabokabuponajazu.pdfIn PDF document text
    • https://s3.amazonaws.com/jozetej/21563084600.pdfIn PDF document text
    • https://s3.amazonaws.com/telasebisu/3903069341.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d9b47d2-72fb-4034-a722-9e87424750d2/ponowugeluwopadepoje.pdfIn PDF document text
    • https://s3.amazonaws.com/zasepo/2310838587.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b88611b2-74d5-480e-9dcd-ce09d318fd88/que_significa_soar_con_que_se_caen_los_dientes_de_abajo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17670b15-963d-4863-a3e6-1f0a0299dddf/how_much_does_home_depot_charge_to_install_a_tankless_water_heater.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010931.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10931 5008 bytes
SHA-256: 30bb452b54f4afb555e875fcf94f8b9b242a6829f3c3850c8e18fcab6916ee61
font_01_sfnt_off00011a56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A56 10704 bytes
SHA-256: a160bc746f945f4922a76ed534f8adc1dc55b52e84c234300264ebfdbbf292d6
font_02_sfnt_off00013ee2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13EE2 16068 bytes
SHA-256: 3b1167557c0500c78008053c404847a906c4d495ef15adec583fc97e76626070

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