Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6d60e3f9815fcdd…

MALICIOUS

PDF

74.1 KB Created: 2021-03-28 10:37:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 2e847051dc27baf0c2a7fe3c98ce31fb SHA-1: 385ab106d30bf11b86968d5dc01eb49285d69933 SHA-256: a6d60e3f9815fcdd4b5fae8fa12551346322401925b8d76fa26a11c67e254289
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with one specifically pointing to a suspicious domain associated with a keyword search for 'american dad apocalypse soon money hack'. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a link farm on disposable hosting, suggesting a phishing or malware distribution attempt. ClamAV detection as 'Pdf.Phishing.Trojan' further supports the malicious nature of the file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 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://resalured.ru/wix?keyword=american+dad+apocalypse+soon+money+hack PDF link annotation
    • http://rupukimonedekij.22web.org/pdf_page_splitter_sejda.pdfIn PDF document text
    • https://cdn.sqhk.co/jimumakevaji/gihjR7I/maze_runner_maze_quotes.pdfIn PDF document text
    • http://midorezif.iblogger.org/marchioness_disaster_inquiry_report.pdfIn PDF document text
    • https://cdn.sqhk.co/xatuxazaz/9Ijcupj/microsoft_office_network_diagram_template.pdfIn PDF document text
    • https://cdn.sqhk.co/pawijilabu/ghicjcj/fun_facts_about_st_valentine_s_day_massacre.pdfIn PDF document text
    • http://pukebebizadolu.mypressonline.com/el_arte_de_la_guerra_pelcula_completa_en_espaol_latino_online.pdfIn PDF document text
    • https://cdn.sqhk.co/xubipoxeguza/gcA5Ehj/orbit_er_grab_pro.pdfIn PDF document text
    • https://cdn.sqhk.co/bigulikexupa/jcjerZm/2005_fun_runner_toy_hauler.pdfIn PDF document text
    • https://cdn.sqhk.co/nuvexajamu/VOghige/45560251732.pdfIn PDF document text
    • https://cdn.sqhk.co/nolovojawek/icUgena/35157640022.pdfIn PDF document text
    • https://cdn.sqhk.co/pafevola/eih8gjH/jio_wifi_software_for_windows_xp.pdfIn PDF document text
    • https://cdn.sqhk.co/xibetevoxaj/hbjhS15/55661156798.pdfIn PDF document text
    • http://danuseko.iblogger.org/wahl_clipper_attachments_uk.pdfIn PDF document text
    • http://topagut.iblogger.org/plant_biochemistry_notes.pdfIn PDF document text
    • http://luzibis.iblogger.org/tuwebudinububu.pdfIn PDF document text
    • https://cdn.sqhk.co/gixejefi/WzhhrhN/11938585838.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dolanuvusipegu.myartsonline.com/57906071377.pdfIn PDF document text
    • http://kalilom.epizy.com/kayla_itsines_bikini_body_guide_2._0.pdfIn PDF document text
    • http://wafutevulutud.epizy.com/social_marketing_plan_template.pdfIn PDF document text
    • http://mejefelutirarej.epizy.com/persona_5_kaneshiro_boss_fight_guide.pdfIn PDF document text
    • http://bodotekufuw.rf.gd/fs_20_review.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_off0000e89d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE89D 5468 bytes
SHA-256: 5a630dc8191748a4b9343d1ad9f554357c51edd888dc5b341f1bcf5af5f6ab1d
font_01_sfnt_off0000fb0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB0A 9364 bytes
SHA-256: 9080d400c41614cb5be05f16f75189f7867f52f11b8d04572016afa8f1c89739

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