Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bb6cf858b1dfc8a…

MALICIOUS

PDF

75.2 KB Created: 2021-03-24 11:09:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 88bf311ad2882881871b5e6db0f10245 SHA-1: 5fe2ea464bd24fbafb633e943810e443d5cc25d6 SHA-256: 2bb6cf858b1dfc8a0d98ba0dc61e0efb2c73598dc6fb7edf8daa39cbb272a30c
134 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://lozipotod.ru/strik?utm_term=how+to+read+data+from+another+excel+file+in+vba PDF link annotation
    • https://safalijig.weebly.com/uploads/1/3/1/0/131070993/a0c34.pdfIn PDF document text
    • https://cdn.sqhk.co/tinolefowi/haPif6g/88661034695.pdfIn PDF document text
    • https://nelurorinubix.weebly.com/uploads/1/3/1/3/131384252/aabaebbbee2bd5.pdfIn PDF document text
    • https://murafasonuralab.weebly.com/uploads/1/3/5/3/135398902/jusozo.pdfIn PDF document text
    • https://rupuxiziwaxez.weebly.com/uploads/1/3/4/7/134765543/pitunabunefita.pdfIn PDF document text
    • https://cdn.sqhk.co/sipebesoxu/gjpcJjg/tozogivubimafoduvoge.pdfIn PDF document text
    • https://cdn.sqhk.co/patizuruf/biajkVv/hd_wallpapers_for_pc_1920x1080_download.pdfIn PDF document text
    • https://cdn.sqhk.co/xozirijor/Adyjhji/beethoven_movie_in_tamil_free.pdfIn PDF document text
    • http://fudopajir.iblogger.org/27038725046.pdfIn PDF document text
    • http://vudujupuboneg.22web.org/titusosikagunukutotupodo.pdfIn PDF document text
    • https://vebodejivab.weebly.com/uploads/1/3/2/3/132302978/vekapenisujipawagoxu.pdfIn PDF document text
    • https://cdn.sqhk.co/soredepel/XhbsOie/8079957672.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/fewunadupop/angularjs_form_validation_tutorial.pdfIn PDF document text
    • http://pitidurafekuji.rf.gd/nelogabovejana.pdfIn PDF document text
    • http://wotofuwib.epizy.com/what_happens_if_a_country_breaks_international_law.pdfIn PDF document text
    • https://s3.amazonaws.com/punagilelabon/mera_shankar_bhola_bhala_song_pagalworld.pdfIn PDF document text
    • http://jujeludapivibiw.rf.gd/how_to_descale_cuisinart_ss-15.pdfIn PDF document text
    • http://jikapepikedamum.epizy.com/48237726078.pdfIn PDF document text
    • https://s3.amazonaws.com/nowokil/brunei_visa_application_form_philippines.pdfIn PDF document text
    • http://dusekamalebe.rf.gd/campbell_biology_2nd_canadian_edition_free.pdfIn PDF document text
    • https://s3.amazonaws.com/bizamesuwepe/32406682750.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e634.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE634 5404 bytes
SHA-256: c8ab7cf2ed57b0b6dd978196c012cb0f2d830187dbd0f4c1298c1ff47f6080b1
font_01_sfnt_off0000f888.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF888 11472 bytes
SHA-256: 8316ee3482a9e0b17ed71ba45df0ec1abc4d15fd72e47e2b090a50551f4b3137

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