Malicious PDF — malware analysis report

Static analysis result for SHA-256 0aa612a56b135d1f…

MALICIOUS

PDF

74.5 KB Created: 2021-01-24 21:51:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 960af65db9140ac7ab54b00cb67f10c1 SHA-1: 52bfcbd3cce983eab9d9619e9122ceda121b604f SHA-256: 0aa612a56b135d1fe0d6b9b45198a1c1e515a5247d409f45179aac65b2a5598d
184 Risk Score

Malware Insights

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

The sample was flagged by multiple heuristics as malicious, including a critical finding for redirecting to known malicious infrastructure. The PDF contains numerous links to disposable domains, suggesting a phishing or spam campaign. While no scripts were explicitly extracted, the PDF structure and link farm behavior are indicative of malicious intent.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://traffmen.ru/123?utm_term=worksheet+assigning+oxidation+numbers+answers In PDF document text
    • https://cdn.sqhk.co/feketukadoz/gihbgjh/what_s_your_story_mod_apk.pdfIn PDF document text
    • http://hamsterbig.com/pixel_station_iosv81k3.pdfIn PDF document text
    • https://cdn.sqhk.co/salijuvam/fQbDjgJ/sky_sports_live_scores_premier_league.pdfIn PDF document text
    • http://richteam.site/the_sir_francis_drake_falling_ball_clockbwfmr.pdfIn PDF document text
    • http://hightrade.club/zumijef9hogu.pdfIn PDF document text
    • http://dobomasinuraz.iblogger.org/borat_full_movie_moviescounter.pdfIn PDF document text
    • http://scm03.ru/gba_emulator_iphone_11_13._3._10j0j1.pdfIn PDF document text
    • http://gebuhrenfrei-mein.com/monstera_plant_root_systemraypl.pdfIn PDF document text
    • http://pannochki-art.com/287578494664pk1k.pdfIn PDF document text
    • http://successinyourlif.website/820294944339wiaw.pdfIn PDF document text
    • http://stc-l.ru/bidezemcwrai.pdfIn PDF document text
    • https://cdn.sqhk.co/menaleratupo/E7N4jif/46708389913.pdfIn PDF document text
    • http://findssldz.xyz/80632411747av6f.pdfIn PDF document text
    • http://xsale.trade/purofegiwitujipiszne4.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/kugelilizibuwum/best_ad_blocker_for_android_root.pdfIn PDF document text
    • http://bajivuselome.epizy.com/blessed_john_henry_newman_rc_college_uniform.pdfIn PDF document text
    • http://poziluxolebulu.epizy.com/landing_page_html_css_template_free.pdfIn PDF document text
    • http://fusatepalu.epizy.com/ikea_hack_platform_bed_with_drawers.pdfIn PDF document text
    • https://s3.amazonaws.com/mexijegedakol/video_editor_free_for_linux.pdfIn PDF document text
    • https://s3.amazonaws.com/gupojakami/45818006262.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e3de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3DE 5584 bytes
SHA-256: 52271c29459b67c14d7949b84ab8e7227a5432ffa3c95e2457925a93553d41e2
font_01_sfnt_off0000f6cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6CB 11032 bytes
SHA-256: 9a4e78490af17c970cb694c8cc58dfda27dc39c270508fb71190af6b2319f875

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