Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f20077cc8cc6067…

MALICIOUS

PDF

91.2 KB Created: 2021-03-24 21:21:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: ecf1df76568eecd4b58be92b362a9f2c SHA-1: c71d1ac721d967aa65aa37d963f72a74caf0f032 SHA-256: 0f20077cc8cc6067485bb8f86d5729ad5d873ee486d91738e00ecafc2d55a079
126 Risk Score

Malware Insights

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

The PDF document exhibits characteristics of a phishing lure, embedding numerous links to external websites, one of which is identified as a potential malicious URI. The ML classifier and ClamAV detection strongly indicate malicious intent. The document's structure and embedded links suggest it is designed to redirect users to potentially harmful content or facilitate further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://botokaw.ru/wix?keyword=the+eczema+diet+karen+fischer+pdf+free+download PDF link annotation
    • http://gofidiva.iblogger.org/bodenosunamitosawirapuga.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469145/normal_6055cb1440097.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451752/normal_603247939c4e2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385410/normal_5fe4497e9fd4e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416327/normal_60321a0350d34.pdfIn PDF document text
    • http://fosakilatugok.iblogger.org/alegreya_sans_font.pdfIn PDF document text
    • http://zawezumibinigot.iblogger.org/muwafisavul.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://f3874c2d-c116-49c2-b7b6-9300dc8fc43e.filesusr.com/ugd/b11f6d_dd6c2ca22c3048eea2c84f738340fdc9.pdf?index=trueIn PDF document text
    • https://02e0da19-eac5-4521-950b-4e410541bf1c.filesusr.com/ugd/516249_26ef61928570407d996ce7b72c064118.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/10b91bdb-8072-41b2-93c6-150cf5ad224e/arduino_for_dummies_2nd_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/54b838eb-ed16-4ddb-88e5-628a0fba6687/is_wayne_dyer_still_alive.pdfIn PDF document text
    • https://be9ca920-c372-4566-b00d-544f92814f3b.filesusr.com/ugd/f0c5a9_d605cc188810420d85983d8245cc6c24.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/mokamoba/tipuxepeda.pdfIn PDF document text
    • http://xarozitapakegur.epizy.com/nokofekadap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6eb6dd40-0d8a-498c-8ebe-6596477768c9/vosezezifovofuwaxipan.pdfIn PDF document text
    • http://temoweboriti.rf.gd/zusuxuxotarif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a53f5c8f-6f22-4415-9a0c-4233c46be967/le_petit_prince_french_and_english.pdfIn PDF document text
    • https://s3.amazonaws.com/bojafazes/animatedknots._com_sheet_bend.pdfIn PDF document text
    • https://ac685e6e-6442-44c0-91a1-b3a367e79ef2.filesusr.com/ugd/ce77c6_ce4ed6f3583e46399f834136ae06ff06.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/310dbddf-250c-439c-9a47-40715af87924/zaxasiridalurumepogu.pdfIn PDF document text
    • https://f98f40d2-b649-4e6b-99af-b89bbf2331ff.filesusr.com/ugd/724bd4_37cd3b54f7534782bf1bb770544449d1.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/diwitapezu/menimamasadusak.pdfIn PDF document text
    • https://s3.amazonaws.com/kozewuposoridil/consonant_digraph_worksheets.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_off000122ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122BA 5548 bytes
SHA-256: 220d41043f2c8f1de3e1ca73b8f50fd728aa14b6ceb7e90ae593eb623486f645
font_01_sfnt_off00013589.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13589 12412 bytes
SHA-256: afbf27757a5e9efcab7905824c72de871c1c475fcda47b6d1cacbd74f0dee0fa