Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3924a020cd29def…

MALICIOUS

PDF

74.4 KB Created: 2021-05-17 20:52:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: d7eef2e159d44337a6bfdfbcdf6c2e9e SHA-1: ed0a78bb8468629f1ba155c42320d54ab51c71a5 SHA-256: e3924a020cd29def8f51c05b11bff501ae18f81da74d16754887f04b76147148
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://mezovuduw.ru/strik?utm_term=motorola+minitor+vi+vhf PDF link annotation
    • https://cdn.sqhk.co/niripakexad/giciijd/11345912462.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480758/normal_5fe7d147b1d7d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467955/normal_5fd9021809f37.pdfIn PDF document text
    • https://takaweso.weebly.com/uploads/1/3/2/3/132302848/xiserepapopisapebad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4531626/normal_60165f2edbc64.pdfIn PDF document text
    • https://tonituligavu.weebly.com/uploads/1/3/4/8/134884188/zajodojub.pdfIn PDF document text
    • https://cdn.sqhk.co/tejilunuf/d1uZEum/14223537285.pdfIn PDF document text
    • https://cdn.sqhk.co/fetebutujo/ifIjggh/bts_dynamite_mv_teaser_photos.pdfIn PDF document text
    • http://takavejesutep.iblogger.org/rejukezokibirolowijirumak.pdfIn PDF document text
    • https://kazarebowuw.weebly.com/uploads/1/3/5/9/135972211/87b309b342f3bb.pdfIn PDF document text
    • http://kazoxizodasese.iblogger.org/document_scanner_apps.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491155/normal_60289045eb003.pdfIn PDF document text
    • https://cdn.sqhk.co/guvevifowo/Wghif74/11665254166.pdfIn PDF document text
    • https://cdn.sqhk.co/vumuwuxa/bhe1Wjg/gerirogawagatoj.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/diwitapezu/mojupotepemafisezoge.pdfIn PDF document text
    • http://pumaxuno.epizy.com/sanitary_engineering_download.pdfIn PDF document text
    • http://pewupetusazovow.rf.gd/spatial_data_mining_theory_and_application.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/383f2804-75af-42c1-b8a8-739cb1156dae/what_is_included_in_creative_writing.pdfIn PDF document text
    • https://s3.amazonaws.com/tobojelusiwi/iphone_alarm_clock_sounds.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9dae2cc-3094-46a3-a309-251ee6c40280/rasotu.pdfIn PDF document text
    • https://s3.amazonaws.com/makixibawumebol/jelesenuguxalawokevi.pdfIn PDF document text
    • http://vuzitugu.epizy.com/99328224435.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e5c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5C5 4892 bytes
SHA-256: f3372bcad9581d3eb024d1c040c874b6cdb7edb830f15fec560850061515f54d
font_01_sfnt_off0000f650.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF650 11124 bytes
SHA-256: 7db3152a62544a239a0709d73c1c2eab24534baec4012d1108dc3448977da7fb

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