Malicious PDF — malware analysis report

Static analysis result for SHA-256 e90afba87a9d607e…

MALICIOUS

PDF

68.9 KB Created: 2021-03-31 13:13:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 0d833dab997a2b53df35c355196a3fff SHA-1: 16e3b8c0f075ad21b4fe0e1b4c986aaa9fe7c7e6 SHA-256: e90afba87a9d607e11479bffd82af0cba0ee475ac93e3ebd9b855c5dcb3e6da4
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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 0.9998

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://jottigo.ru/wix?keyword=klimaire+mini+split+remote+manual PDF link annotation
    • http://lewuvumo.sportsontheweb.net/92997925045.pdfIn PDF document text
    • https://wejobufobugof.weebly.com/uploads/1/3/5/3/135348322/5b3517912a.pdfIn PDF document text
    • http://gifudevuf.iblogger.org/soxuvutijekasofolumivo.pdfIn PDF document text
    • https://xakuwije.weebly.com/uploads/1/3/4/3/134340554/boguketoxatavad_limojatumi_bubale_fudinusazeboki.pdfIn PDF document text
    • https://cdn.sqhk.co/sewadokoka/wWjcrAn/music_battle_guess_the_song_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/wanadujogo/gCwDslI/how_can_i_learn_javascript_fast.pdfIn PDF document text
    • http://wukilirukorobow.iblogger.org/how_to_rappel_with_a_grigri.pdfIn PDF document text
    • http://pifovabu.getenjoyment.net/vegumegokabevog.pdfIn PDF document text
    • https://zefukigu.weebly.com/uploads/1/3/4/7/134718507/837f5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/290fa1b1-c655-4751-b4b5-661455b0b0e9/how_to_reset_the_control_lock_on_a_whirlpool_duet_dryer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84af2c6d-1732-4868-9bf8-a14db8f4769f/which_countries_would_have_been_behind_the_iron_curtain_during_the_cold_war.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ef17d10-cf0a-4576-af63-659005f2e646/26779585374.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b0ee610-d110-4577-a592-23e7cfaf5045/kowedajiwozakadedusil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7b9706e-339c-436b-8c07-32da61b9e263/62257079130.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ddd99377-c9ad-47cb-9db5-5458ce17cdf5/does_tracfone_offer_hotspot.pdfIn PDF document text
    • http://zelalosiker.rf.gd/xokosepidosozumiteni.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/35ae6a78-bfbc-4064-846d-10ff4c01ef85/naxatiretaluwemobe.pdfIn PDF document text
    • http://nunivigel.epizy.com/john_williams_butcher_s_crossing.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04d42b2a-c34f-4460-bbf7-47b2b62eb3b5/motocross_motorbike_simulator_offroad.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_off0000d1fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1FE 4936 bytes
SHA-256: d231a39341e06e62baea3d1b45f1dfcad73f056ca21b265f1993b19cff2e7a50
font_01_sfnt_off0000e2ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2AC 10860 bytes
SHA-256: 38c0ee53e2fd0f75ea7ce7c668c33dd218fc25a883f4fdef650ac18249cc6f62

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