Malicious PDF — malware analysis report

Static analysis result for SHA-256 95bca5737cca6d95…

MALICIOUS

PDF

117.9 KB Created: 2021-03-13 18:29:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 0bd0be1eef17e9db143728b5ac1cb963 SHA-1: 475eed2560a36aa17676a779b07a6dd50b3b37cf SHA-256: 95bca5737cca6d9541df7cffa8ffb79f33eade5258586faf3a19bcceffced4e8
126 Risk Score
Tags
free-cdn-ebook-manual-lure

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://gimoguvi.ru/strik?utm_term=2019+can+am+spyder+f3+limited+owners+manual PDF link annotation
    • http://lusivemewuza.22web.org/chrome_devtools_performance_other.pdfIn PDF document text
    • http://subanufuxazis.iblogger.org/how_to_connect_hp_officejet_4500_printer_to_computer.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444644/normal_600e899dca4c0.pdfIn PDF document text
    • https://cdn.sqhk.co/jalotenabo/mhgOgjr/34969162483.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487416/normal_5fc7b26dbaf65.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475375/normal_604cd75ecc590.pdfIn PDF document text
    • http://boviriso.22web.org/pool_billiards_pro_apk_free.pdfIn PDF document text
    • https://cdn.sqhk.co/wujukipako/mgdb5n2/zanoboxor.pdfIn PDF document text
    • https://cdn.sqhk.co/devisojop/iehfPvY/movies_full_hd_new.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366389/normal_60116e3c441fb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417809/normal_604b9054eefcb.pdfIn PDF document text
    • https://cdn.sqhk.co/begesiki/gfchjhb/48262696838.pdfIn PDF document text
    • http://sutixekume.22web.org/besekopexikavovagek.pdfIn PDF document text
    • https://cdn.sqhk.co/parikozug/XhfjbQY/seville_orange_trees_for_sale_florida.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384301/normal_5fd60d64d3ee1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://jutufevokozal.epizy.com/what_is_my_zodiac_sign_december_21.pdfIn PDF document text
    • http://kejoweb.epizy.com/puzezidowinokemezugaw.pdfIn PDF document text
    • http://susupufewowe.epizy.com/55061808332.pdfIn PDF document text
    • http://tidovaj.epizy.com/28313109259.pdfIn PDF document text
    • http://pasazaxara.rf.gd/hematoma_pronunciation_guide.pdfIn PDF document text
    • http://bagozorox.rf.gd/glasgow_school_of_art_fire_report.pdfIn PDF document text
    • http://nedepufeto.epizy.com/50321176276.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_off00017e86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17E86 5928 bytes
SHA-256: ce90ebb4f02244c93acf66a380abdaad27662e6ef7530fc981b69ebd04e048d4
font_01_sfnt_off000192a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x192A1 11660 bytes
SHA-256: 509e570f016beda005bf9b7fa45de681115030490a1a10701ffdf4e278444686
font_02_sfnt_off0001ba47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BA47 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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