Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a888788d1ed9f14…

MALICIOUS

PDF

66.6 KB Created: 2021-02-20 16:23:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: af7ed8ffd70f01f1cda9cd3f2e0eecbb SHA-1: 608082d81af1eb9a4ef4f54023f561f1a1305841 SHA-256: 6a888788d1ed9f14574bfc57ff885ab1d068c0a5c6d61909b3c9ac4d12f47457
182 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with at least one pointing to known malicious redirector infrastructure. The document body, though heavily obfuscated, includes text related to 'Safeway club card balance check', suggesting a phishing lure. The presence of numerous links on disposable hosting further indicates malicious intent, likely to lead users to phishing or malware download sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8546

Heuristics 4

  • 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.
  • 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/aws?utm_term=safeway+club+card+balance+check In PDF document text
    • http://penibibujobufux.iblogger.org/71353769608.pdfIn PDF document text
    • https://cdn.sqhk.co/simixejazir/aiaghtX/tuxegeritudeguvoz.pdfIn PDF document text
    • http://aduo5.online/video_bts_heartbeat_mv_mp4utwwf.pdfIn PDF document text
    • https://cdn.sqhk.co/xokebuzizo/fIo1rgf/mimpi_ular_masuk_rumah_dan_ditangkap.pdfIn PDF document text
    • https://cdn.sqhk.co/vukobefebu/Ojd3jes/gunshot_wounds_to_the_head.pdfIn PDF document text
    • https://cdn.sqhk.co/tinodifozeza/ghLqQ7D/cheapest_water_slides_for_sale.pdfIn PDF document text
    • http://questotzvezd.space/toyota_camry_2019_for_sale_newbyqcw.pdfIn PDF document text
    • http://good-production9.site/letter_writing_format_in_english1ss3i.pdfIn PDF document text
    • https://cdn.sqhk.co/nigulavax/AjiTmhj/lily_s_garden_pregnant.pdfIn PDF document text
    • http://bibobupuk.22web.org/basorafalolafutizo.pdfIn PDF document text
    • https://cdn.sqhk.co/vazoguzo/iUtcBa1/78366151573.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/wujapu/xowofelosexumopuwasuzudo.pdfIn PDF document text
    • http://midelex.epizy.com/dokimi.pdfIn PDF document text
    • https://s3.amazonaws.com/jusagi/49785533931.pdfIn PDF document text
    • http://xamojivegubon.epizy.com/java_web_service_soap_client_example.pdfIn PDF document text
    • https://s3.amazonaws.com/genedonapubefe/whatsapp_app_for_android_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/xisefowu/79674939218.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dd6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD6B 5432 bytes
SHA-256: 32a9b82fef99444924424dfedfaa802818c6122d146ff9f367942d176ccf003a

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