Malicious PDF — malware analysis report

Static analysis result for SHA-256 7badfb376f5bbd04…

MALICIOUS

PDF

68.8 KB Created: 2021-02-19 03:07:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: a66f600171897db8a2e1fd108cea94a5 SHA-1: 2eb1f2df6418197b8768571c49a6d04477f0fffc SHA-256: 7badfb376f5bbd04357afe7b3d096608ce2f6e264005685f53d16b34f574b4c9
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The PDF contains numerous embedded URLs, many pointing to disposable hosting, suggesting a link farm or phishing lure. The presence of external URIs and the overall structure strongly suggest this document is designed to redirect users to malicious sites, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://maypoin.ru/aws?utm_term=types+of+beaks+of+birds+for+class+3 PDF link annotation
    • https://cdn.sqhk.co/wefenosefob/WjhcOih/snow_bros_2_nes_rom_download.pdfIn PDF document text
    • https://cdn.sqhk.co/lazaxosu/6vJBFfY/bird_of_paradise_dance_meme.pdfIn PDF document text
    • https://cdn.sqhk.co/webuzifinuno/JjiieG3/99137354939.pdfIn PDF document text
    • https://cdn.sqhk.co/lokalofobox/e7jc6U6/54248777424.pdfIn PDF document text
    • http://drilltech.info/word_knowledge_study_guide_for_asvabd4azy.pdfIn PDF document text
    • http://alphabitx.com/english_idioms_and_phrases_with_bangla_meanings_free_download1yrg8.pdfIn PDF document text
    • https://cdn.sqhk.co/dugixikisim/hqivfCl/ikea_brimnes_nightstand_hack.pdfIn PDF document text
    • https://cdn.sqhk.co/mifijizudi/gghckH8/29116210959.pdfIn PDF document text
    • https://cdn.sqhk.co/fujotojaxob/agdvkjc/map_marker_icon_size_android.pdfIn PDF document text
    • http://instgramcopyrightdispute.com/vivipurocnh37.pdfIn PDF document text
    • http://fomizedo.iblogger.org/dictionary_offline_free_for_windows_7.pdfIn PDF document text
    • https://cdn.sqhk.co/jugomuzuteb/jujjAgc/2144040027.pdfIn PDF document text
    • https://cdn.sqhk.co/zamepeja/fshdEgj/19693904121.pdfIn PDF document text
    • https://cdn.sqhk.co/zalopubid/bheiac8/51897701189.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/vinivuxo/free_christmas_email_signature_template.pdfIn PDF document text
    • http://wukevuwotud.rf.gd/crusader_of_light_archer_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/jajuzasalikirut/72989081221.pdfIn PDF document text
    • http://goseletew.epizy.com/flip_clock_countdown_after_effects_template.pdfIn PDF document text
    • https://s3.amazonaws.com/wunupalezozerud/15289861484.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_off0000d0b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0B8 5568 bytes
SHA-256: 2483896afa3fc3a18c3ee10ade4b853b14cee068c614507f3d8f0db24f3c1eb9
font_01_sfnt_off0000e3c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3C1 10256 bytes
SHA-256: a5941c69ce0d885ced3d5077cbdbacbb58fc54adbd3c6af26603d5b6fa45f373

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