Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0ea49c04527c158…

MALICIOUS

PDF

80.8 KB Created: 2021-04-26 11:12:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 5d78e58d372e3456364e392b308fe94b SHA-1: 21f1515acf0e4e7fb3b0ff6709ef377fc61ddbed SHA-256: a0ea49c04527c158407460d04e04c565add9871b12240bbe9ad57c5a16f1c5e8
126 Risk Score

Malware Insights

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

The PDF contains a high number of embedded URLs, many pointing to disposable hosting or link farms, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and numerous external links are indicative of a spearphishing attachment designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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/strik?utm_term=night+shift+brewing+whirlpool PDF link annotation
    • https://cdn.sqhk.co/kososojog/aifgiji/vezusefugewofunu.pdfIn PDF document text
    • https://xofebigile.weebly.com/uploads/1/3/0/7/130739964/sefol_rajejaveloj.pdfIn PDF document text
    • https://cdn.sqhk.co/mekaxuzoxu/iMfGcjh/37824170654.pdfIn PDF document text
    • http://magic-spring.com/edith_hamilton_mythology_free_doexhqr.pdfIn PDF document text
    • http://imkl-checker.com/hp_deskjet_3050_drivers_windows_10yflzn.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487186/normal_5fd2bf9e7b221.pdfIn PDF document text
    • https://wopadutizibum.weebly.com/uploads/1/3/4/3/134306931/jotefotipogufu-riruw-gejoti.pdfIn PDF document text
    • https://cdn.sqhk.co/bogovureg/hXsjjhc/retusolijigakajegedew.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369766/normal_603efad968ec7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406793/normal_60490ed793ed6.pdfIn PDF document text
    • https://safamitiwifiro.weebly.com/uploads/1/3/0/7/130739579/1254240.pdfIn PDF document text
    • https://cdn.sqhk.co/wibetaxor/hjgjFjg/57352429851.pdfIn PDF document text
    • https://wujuwali.weebly.com/uploads/1/3/5/3/135326068/1a804da07e5c.pdfIn PDF document text
    • http://inostrana.com/19303761775zp6g8.pdfIn PDF document text
    • http://padlamadla.site/78163734078g36rt.pdfIn PDF document text
    • https://vonenefanor.weebly.com/uploads/1/3/4/6/134638091/wetalijoxuso_mazeler.pdfIn PDF document text
    • https://cdn.sqhk.co/xibetevoxaj/kicLmie/wood_carving_tool_store_near_me.pdfIn PDF document text
    • https://faporipito.weebly.com/uploads/1/3/4/6/134600592/ddb6174.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454161/normal_6021a3edac909.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/babetafaperaxov/sarubopudalagegapum.pdfIn PDF document text
    • https://s3.amazonaws.com/jasipefulaxiduj/how_to_get_a_food_license_in_texas.pdfIn PDF document text
    • https://s3.amazonaws.com/palevijuj/zuxedemo.pdfIn PDF document text
    • https://s3.amazonaws.com/boxalewijim/minecraft_1._7_2_cracked_launcher.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaporam/wibuxanapokuwusen.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_off0000fe52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE52 5152 bytes
SHA-256: c2c3267a91c09996e36c23700a3111273e26b7dc262098f3f70800ae66a2260a
font_01_sfnt_off00010ff5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FF5 11124 bytes
SHA-256: 5fb5cc04b62fb2381d88c48e1acc57333ac96d7a2cbb500edc34214324744e07

Open this report in the interactive analyzer, or submit your own file for analysis.