Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea2e9600b5b44b4f…

MALICIOUS

PDF

65.8 KB Created: 2021-02-11 06:41:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 41b37117d7053a70e26311dfb104bb4c SHA-1: 5a40357a72491593498471cf7dd1b84a2e904c0d SHA-256: ea2e9600b5b44b4fac2f3a463145cc310dc5e2e44ec67472f2cba12b35b3b9a1
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF file was identified as malicious by multiple heuristics and a machine learning classifier, specifically flagged as a phishing trojan. It contains numerous embedded links, including one pointing to a known malicious redirector at 'yafferge.ru'. The document body, though partially obfuscated, contains text related to Minecraft servers, suggesting a lure to attract users to potentially malicious content hosted on the linked domains.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://yafferge.ru/123?utm_term=servidores+de+minecraft+1.8+no+premium+skywars In PDF document text
    • http://mxbur.fun/the_serpent_power_arthur_avalonqasid.pdfIn PDF document text
    • http://originalhallyu.com/ocoee_river_knife_reviewx859i.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367287/normal_5ffc06239e490.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482215/normal_5ff137271a210.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456114/normal_5fd68b35f2961.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366989/normal_601ac70edc3b1.pdfIn PDF document text
    • https://cdn.sqhk.co/zokasejiz/jGjcggY/stadia_controller_steam.pdfIn PDF document text
    • http://stroiline74.ru/595806504682ua1y.pdfIn PDF document text
    • http://idealica-ordina.site/41726632355s7w8t.pdfIn PDF document text
    • http://zadodol.22web.org/68178234490.pdfIn PDF document text
    • https://cdn.sqhk.co/tivuzofep/crgfMha/bendy_in_nightmare_run_download_apk.pdfIn PDF document text
    • http://groby-ritual.online/nibevalafoxokotesasu6frp7.pdfIn PDF document text
    • https://cdn.sqhk.co/fujotojaxob/iAyjf0p/58381090438.pdfIn PDF document text
    • http://vabuletarikinil.iblogger.org/rimufilukate.pdfIn PDF document text
    • http://wutugupim.iblogger.org/apple_music_not_showing_in_android_auto.pdfIn PDF document text
    • https://kikurexabo.weebly.com/uploads/1/3/5/3/135325422/fibaxabugir_ledufexoka_rogifinuz_nagovix.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wejivitekep.epizy.com/40034653629.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_off0000bf7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF7D 5968 bytes
SHA-256: 3c0c574fbf63f6971971b38724fc04bc44df374091c621c6676fc30e3e0c8483
font_01_sfnt_off0000d3eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3EB 10688 bytes
SHA-256: ac69848f3bb790072e1268ebbbdf964fbb17d74d74bf257d621f4b318afbe433

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