Malicious PDF — malware analysis report

Static analysis result for SHA-256 19e4fca616402ef4…

MALICIOUS

PDF

78.4 KB Created: 2021-03-18 09:27:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 0fb0b51ae43fd038178a53b149dfc754 SHA-1: 1f09c8fc0cbe5988103a2eaa79115570f1f6143d SHA-256: 19e4fca616402ef4f1c23b48d4d53c528fa58b580d4926b1440e172f6a14ba32
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a link farm, with the primary URL being a potential phishing or malware distribution point. ClamAV detection and ML classification strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and numerous external links suggest it's designed to redirect users to malicious content.

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://xezojetit.ru/wix?keyword=harry+draco+slash+nc-17 PDF link annotation
    • https://nifiwaratobiwe.weebly.com/uploads/1/3/5/3/135346776/c7ef178.pdfIn PDF document text
    • https://lufuzanexitib.weebly.com/uploads/1/3/4/8/134859686/6582587.pdfIn PDF document text
    • http://0fruits.space/lafuwoweniw7k6td.pdfIn PDF document text
    • https://titoboxe.weebly.com/uploads/1/3/0/8/130874676/e63d0f4997fc.pdfIn PDF document text
    • http://italystore.pro/burn_your_portfoliorupj1.pdfIn PDF document text
    • http://submonster.xyz/adobe_pack_subs_adobe_saggarten2bgpz.pdfIn PDF document text
    • http://wajadadajevebab.22web.org/bsc4success_september_2020.pdfIn PDF document text
    • https://jujizifij.weebly.com/uploads/1/3/4/3/134309807/namat_mesukopipawadip_gesesisibuzoto_buvur.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://resomaxijudutuw.epizy.com/what_is_the_best_diet_for_shredding.pdfIn PDF document text
    • https://s3.amazonaws.com/mudurixo/caecum_adalah.pdfIn PDF document text
    • http://filopatoj.rf.gd/fosulikesakib.pdfIn PDF document text
    • https://s3.amazonaws.com/lefemijip/calisthenics_training_routine.pdfIn PDF document text
    • https://1416a32c-f91c-4ec3-9c10-bfdf610c7df7.filesusr.com/ugd/76de1a_75097a1124344318a09a301b0c2318dc.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/nijudow/bozuzolukojefotatirez.pdfIn PDF document text
    • https://48bf584d-d56c-45cf-b4f3-c1c05dce5274.filesusr.com/ugd/3f4b99_3d915c8c1d564670b531a5e9b22c648d.pdf?index=trueIn PDF document text
    • http://feliruxitekul.epizy.com/american_marriage_book_club_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/nerugiraxura/74880471991.pdfIn PDF document text
    • https://d21da297-2d1c-4020-882f-059d99c29dc9.filesusr.com/ugd/3724a2_613042111b0146b3a8ae9a040314d35c.pdf?index=trueIn PDF document text
    • http://pixagikaw.epizy.com/30651833622.pdfIn PDF document text
    • https://s3.amazonaws.com/fojaxexino/cobra_walkie_talkie_charger.pdfIn PDF document text
    • https://s3.amazonaws.com/dobesogum/70134684171.pdfIn PDF document text
    • https://s3.amazonaws.com/nowonovege/74753961284.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_off0000f2de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2DE 5252 bytes
SHA-256: 42cce2ce7d260d5b8fddd704e3a23cc210f8ab8d91fb401bd9f54a9e44776b90
font_01_sfnt_off000104c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104C8 11092 bytes
SHA-256: b7c82492ae4b435fef92100f2bce6d387faaaebd269d45bb51805c389a39a0ba

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