Malicious PDF — malware analysis report

Static analysis result for SHA-256 01a892e2d4f18928…

MALICIOUS

PDF

87.2 KB Created: 2021-05-07 18:47:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: ce10a47cd14217cabd97f51666366fc1 SHA-1: e0c699bbb5d948c69ab431b1d98e3e9b65006e09 SHA-256: 01a892e2d4f1892863a042b72bd0f12974c9e830936374d1c97126a339188d45
126 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including ML and ClamAV, as malicious and phishing-related. It contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm designed to redirect users to potentially harmful content. The presence of external URIs and the 'link farm' heuristic strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://kuzutuzo.ru/strik?utm_term=what+caused+absolutism+in+europe PDF link annotation
    • http://lopixerirerenex.mywebcommunity.org/vuxasevax.pdfIn PDF document text
    • https://dixotusokor.weebly.com/uploads/1/3/0/9/130968976/5376974.pdfIn PDF document text
    • http://wotidoteked.mywebcommunity.org/acute_toxicity_testing.pdfIn PDF document text
    • http://naturwows.space/verinuxuwupogifukibotowisfjq5.pdfIn PDF document text
    • http://blancer.xyz/bring_into_existence_crossword_answersiu8r5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450746/normal_606c60ca58d37.pdfIn PDF document text
    • http://naturebiolog.fun/gafibijuso60s7s.pdfIn PDF document text
    • https://zerakilun.weebly.com/uploads/1/3/2/6/132695460/vuraridekef_kufezelina_buviremiko_wiridud.pdfIn PDF document text
    • http://ratixopawem.mypressonline.com/moseronikegegaruzusufibu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446930/normal_602fa9c4da8bb.pdfIn PDF document text
    • https://zejuraxarobepek.weebly.com/uploads/1/3/1/4/131407797/guxuzom.pdfIn PDF document text
    • http://erogan-oficial.site/xfinity_x1_box_will_not_turn_onafm4x.pdfIn PDF document text
    • https://tuxativavowaz.weebly.com/uploads/1/3/1/4/131437956/gabomutidisujur.pdfIn PDF document text
    • http://kafidovomiguvo.mywebcommunity.org/taylormade_r15_hybrid.pdfIn PDF document text
    • https://pasazobunev.weebly.com/uploads/1/3/4/6/134670772/c3342153.pdfIn PDF document text
    • http://pakupuxojopef.getenjoyment.net/management_accountant_cv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369663/normal_5fc9962287f88.pdfIn PDF document text
    • http://kfnwejfnkwheklf.space/polycarbonate_fabrication_guidevu752.pdfIn PDF document text
    • http://niwopofe.scienceontheweb.net/wisconsin_buyers_guide.pdfIn PDF document text
    • http://jabewes.medianewsonline.com/95190655467.pdfIn PDF document text
    • http://nupesupo.mypressonline.com/amar_chitra_katha_mahabharata.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://roporuti.onlinewebshop.net/beautiful_in_white_lyrics.pdfIn PDF document text
    • http://davofunup.onlinewebshop.net/71693944303.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_off000118e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118E9 5468 bytes
SHA-256: c4e320a24ea483232b3917ab945f762eb665973e93065814711d85797b264017
font_01_sfnt_off00012b52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B52 10888 bytes
SHA-256: 5060ca77b5b898a37b89db1dd6ab77f9315c50d5f56c112ddb66b2f7c6a4ca12

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