Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9e191484a32c9cc…

MALICIOUS

PDF

87.9 KB Created: 2021-04-04 14:36:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 417475b6b5d5f836842f65a7b09b8483 SHA-1: 189131ce210cf4e65dd50844cd570501248ee2dc SHA-256: b9e191484a32c9cc85e71ed3557521f1f0268421a7e5b0be9b46166d5341ae5b
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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ponafet.ru/wix?keyword=pokemon+red+unblocked+g4mes PDF link annotation
    • http://affilateapp.online/pirozimivuperuzepoleoql23.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424645/normal_5fdc3e10a3d1d.pdfIn PDF document text
    • http://ligexekena.mywebcommunity.org/3501462239.pdfIn PDF document text
    • http://uggi-ugg.com/flammable_cabinet_guidelinest0ep6.pdfIn PDF document text
    • https://sipinawuzukefo.weebly.com/uploads/1/3/1/4/131410227/zurulunutego_xilezofi_jeraw_junuwo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393790/normal_5fd78d809949e.pdfIn PDF document text
    • https://fitisasituwag.weebly.com/uploads/1/3/4/8/134846324/96fa185dbd.pdfIn PDF document text
    • http://dibiwarisogix.mygamesonline.org/pdf_converter_to_word_document_download.pdfIn PDF document text
    • http://hotsales-com.xyz/antiphospholipid_syndromeksv45.pdfIn PDF document text
    • http://punavuvipufov.sportsontheweb.net/marketing_objectives_meaning.pdfIn PDF document text
    • http://tajuliwelofiti.medianewsonline.com/download_african_map.pdfIn PDF document text
    • http://xinuvaro.sportsontheweb.net/37904611308.pdfIn PDF document text
    • https://muwalivom.weebly.com/uploads/1/3/2/6/132695892/d994df3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470224/normal_5fd70942a3078.pdfIn PDF document text
    • http://nuwazomesesanok.mygamesonline.org/68986353704.pdfIn PDF document text
    • http://ganedoxumizaj.sportsontheweb.net/fexowubavofilelopune.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488322/normal_5febdcab2661c.pdfIn PDF document text
    • https://suxaniwaxunese.weebly.com/uploads/1/3/4/3/134385499/xafepiwe.pdfIn PDF document text
    • https://wegidakalulat.weebly.com/uploads/1/3/5/3/135337254/2676930.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://desovizipelo.onlinewebshop.net/wixijuvaxurokokazan.pdfIn PDF document text
    • http://bilisedutave.myartsonline.com/42150292040.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_off000118e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118E1 5344 bytes
SHA-256: 1a5bba18ff674d73a5f44f37c4ece890bc8f875d7cd7cd979b7c471cddf678fb
font_01_sfnt_off00012b06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B06 11532 bytes
SHA-256: 4af0ddfbad3ee4303b310c9c66ceb69a90c77fd13dc6a45c00e5ffb40b93b9db

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