Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e8fc591bd69a6e2…

MALICIOUS

PDF

95.9 KB Created: 2021-02-15 20:40:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 7647513062de371991a78acfe50084f0 SHA-1: 4cf28302a02dd27673b1b8787d790a3a997104b6 SHA-256: 6e8fc591bd69a6e29ea3e0047629fedfac2fa461e350a5451b72b70860deccea
154 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, which is disguised as a search result for 'why is my evod pen blinking blue'. This indicates a phishing attempt to lure users to a malicious site. The ML classifier and ClamAV detection strongly support the malicious nature of this file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://crophysi.ru/123?utm_term=why+is+my+evod+pen+blinking+blue In PDF document text
    • https://vizegibog.weebly.com/uploads/1/3/4/4/134458583/2038439.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443341/normal_601bfa4353928.pdfIn PDF document text
    • https://gumosoxegobekij.weebly.com/uploads/1/3/3/9/133999275/pofawojepilud.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470387/normal_5feb47939a252.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466675/normal_5fc8fe913e2db.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403410/normal_602026971a623.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371004/normal_60140c5681f6c.pdfIn PDF document text
    • http://medupaj.iblogger.org/tojomumamodamopunafamo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409798/normal_5fc7eb961ae8c.pdfIn PDF document text
    • http://microdigitalmeter.xyz/1005178504hazo4.pdfIn PDF document text
    • http://bilet-pdd.site/93120864701dqdzv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kenabemaborok.rf.gd/fetal_echocardiography_a_practical_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibudasagas/zelutofigazureg.pdfIn PDF document text
    • https://s3.amazonaws.com/zukogi/vewumivewinef.pdfIn PDF document text
    • http://nolonogatifotop.epizy.com/nigiwenubanigalen.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagobomap/81819496684.pdfIn PDF document text
    • http://lakiver.epizy.com/volume_booster_apk_free.pdfIn PDF document text
    • https://s3.amazonaws.com/baritexovopa/giguwanuvemekuganukax.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_off00013b4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B4F 5444 bytes
SHA-256: 2100c76df9b2149dd426f6d8af12a45fa6dfb6633915d0b329b37aad1515ade6
font_01_sfnt_off00014dc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14DC9 10720 bytes
SHA-256: 7662779d0aeae8183f95b6563a7452ef5ff6320c55fee50e97d5807c9e59d82a

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