Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea3263601dc3ce19…

MALICIOUS

PDF

76.9 KB Created: 2021-03-01 09:48:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 72209f575ae71d624aa3d594da0e2a72 SHA-1: aae34d9270a3cbaa803aec9f70f3cf57f7355210 SHA-256: ea3263601dc3ce1937eafc43489eea583b2446c315080b928ea3f6138e1c2382
134 Risk Score

Malware Insights

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

This PDF document was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier indicating maliciousness. It contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm or phishing lure. The 'SE_URGENCY_LURE' heuristic indicates the document likely uses deceptive language to prompt user interaction, a common tactic for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://leonvi.ru/strik?utm_term=triangle+angles+worksheet+pdf PDF link annotation
    • http://siwosupegejolop.medianewsonline.com/tivizij.pdfIn PDF document text
    • http://raifaisentgo.online/ramoxasurikanixo5fgrh.pdfIn PDF document text
    • http://labiosdewonda.com/single_cycle_multi_cyclet1we3.pdfIn PDF document text
    • http://allwoman.site/15374720966nwb67.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469358/normal_5ff3fcceb7dcd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382965/normal_60067ba7696b8.pdfIn PDF document text
    • http://tuwasukam.getenjoyment.net/the_mixed_up_files_of_basil_e_frankweiler.pdfIn PDF document text
    • http://klyshsheff.xyz/mirovisulugazetenomolevw0kh.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zejibanunepi.myartsonline.com/56060764981.pdfIn PDF document text
    • http://dakafatuvuguviz.atwebpages.com/kaximenenumugoti.pdfIn PDF document text
    • http://redifigikutusoj.myartsonline.com/how_to_set_up_voicemail_on_avaya_phone_5410.pdfIn PDF document text
    • http://totuxivez.onlinewebshop.net/vigid.pdfIn PDF document text
    • http://bodegifu.atwebpages.com/78590091868.pdfIn PDF document text
    • http://dogiwexor.myartsonline.com/cobra_29_ltd_classic_delta_tune.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e5a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5A6 3392 bytes
SHA-256: ea55a30b8df3c54ad55001aa5cbbf7b17327337c317076fd19bb2493eb584fe6
font_01_sfnt_off0000f1c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1C3 5408 bytes
SHA-256: 78576505e087ef7d60e072105ae5b85319d2b9cc86018f85cecec880353c8784
font_02_sfnt_off0001043a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1043A 10028 bytes
SHA-256: 76de4cc69825a3398ee2b4a44b579a8615dfdd969f9f8b36a874691a3f24dad8

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