Malicious PDF — malware analysis report

Static analysis result for SHA-256 d059a3b4099c24e1…

MALICIOUS

PDF

88.2 KB Created: 2021-03-28 17:13:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 3b629add95c3b46d9ac807e07f689a5d SHA-1: 3b7fc3c1510ac3c3b6231cf34766f9ced3fb4fb2 SHA-256: d059a3b4099c24e1fa7ba46652dd27258a6d1ba820b32a17247d3e1f536f4353
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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/strik?utm_term=what+is+the+price+of+a+swim+spa PDF link annotation
    • http://liketime.fun/alimentos_transgenicos_definiciono7kcv.pdfIn PDF document text
    • https://cdn.sqhk.co/kixobaza/cWJjeiT/moto_rider_go_highway_traffic_for_pc.pdfIn PDF document text
    • http://netewe9.xyz/sosikamivosijesaxuvitf5xxf.pdfIn PDF document text
    • https://cdn.sqhk.co/lamajemomu/o6Igigf/best_open_world_games_ps4_multiplayer.pdfIn PDF document text
    • http://apsdd54gfv.xyz/befawininopurekd5vg.pdfIn PDF document text
    • https://cdn.sqhk.co/jiguluzufuwa/jhjgFhj/16179872997.pdfIn PDF document text
    • http://genoray.pro/36125471120rtxmn.pdfIn PDF document text
    • http://sesulede.iblogger.org/does_the_man_in_the_high_castle_have_a_good_ending.pdfIn PDF document text
    • http://tazogupiwelul.iblogger.org/68983081255.pdfIn PDF document text
    • https://cdn.sqhk.co/xunijejozi/diizjdx/glow_hockey_2_hack_apk.pdfIn PDF document text
    • http://fastgetme.online/what_did_rome_and_greece_have_in_common2extr.pdfIn PDF document text
    • http://nesobaka7.xyz/pengertian_jaringan_lan_local_area_network_adalahqltfy.pdfIn PDF document text
    • http://creamwalls.online/1596665861qbs4d.pdfIn PDF document text
    • http://honbiz.pro/bowusilofamuzemuwuwejiimi7.pdfIn PDF document text
    • https://cdn.sqhk.co/gujurolekuma/XwXgf6g/duck_hunting_2020_bird_shooting_games_3d.pdfIn PDF document text
    • http://mscgis.net/biological_classification_mcq_for_neeta24s0.pdfIn PDF document text
    • http://dom-bita.org/american_journey_workbook_answerskw8lq.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/loxopudizus/android_room_database_query_example.pdfIn PDF document text
    • https://s3.amazonaws.com/murudute/37975519293.pdfIn PDF document text
    • https://s3.amazonaws.com/xixonu/cuneiform_bone_sore.pdfIn PDF document text
    • http://nibudomatimemi.rf.gd/66447338914.pdfIn PDF document text
    • https://s3.amazonaws.com/zowejunef/jerikejijexes.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_off000118f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118F0 5328 bytes
SHA-256: 12049f6336410a50e2348b160d7360ec589a0fa0c8022824a1232bf7950f3117
font_01_sfnt_off00012aff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12AFF 12176 bytes
SHA-256: 533a2633a70d3aad4b3860d14c156c939029f002138335cef4a02f9c431e9ab1

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