Malicious PDF — malware analysis report

Static analysis result for SHA-256 80864c5939fc52ce…

MALICIOUS

PDF

82.5 KB Created: 2021-02-26 19:24:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 7415435bb883b1ef2cdc87a8bd81f6cd SHA-1: fc105b7a45dcdb12802068f2c4aa7e855ac5d9c4 SHA-256: 80864c5939fc52ce2b8fe7cdc161d0749640edcac2068b0262aa45f95590b09c
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URL pointing to 'druttle.ru', which is suspicious and likely part of a phishing or malware distribution scheme. The PDF structure and embedded content suggest an attempt to disguise malicious intent.

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
  • 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://druttle.ru/wb?keyword=all%20diary%20of%20a%20wimpy%20kid%20books%202019 PDF link annotation
    • http://registrat.space/tevanozonemnzamy.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454043/normal_601e908892b22.pdfIn PDF document text
    • http://grizhoff.ru/zeweridanigiladufegh0tny.pdfIn PDF document text
    • https://dubuweni.weebly.com/uploads/1/3/1/6/131637072/jibikidulap-pakaginaxi-xosox.pdfIn PDF document text
    • http://ses-paypal.com/mipifikopaluxazubogufomow57hl.pdfIn PDF document text
    • https://javemutamutog.weebly.com/uploads/1/3/4/6/134638327/f6ea60fbb479.pdfIn PDF document text
    • http://cmbmarketing.agency/watobidfg2pd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tijopuzotozume.rf.gd/mp4_video_er_software_for_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwosil/nodilata.pdfIn PDF document text
    • http://fafiwokewe.epizy.com/76934750763.pdfIn PDF document text
    • https://s3.amazonaws.com/xijilesuzuxo/wings_of_fire_book_13_free.pdfIn PDF document text
    • https://s3.amazonaws.com/xutomoxu/68837681759.pdfIn PDF document text
    • https://s3.amazonaws.com/wupiwupiwot/44212693909.pdfIn PDF document text
    • http://gesulomesazisaj.epizy.com/38639043000.pdfIn PDF document text
    • https://s3.amazonaws.com/zoluwivebiro/piniju.pdfIn PDF document text
    • https://s3.amazonaws.com/topipovikapari/acrylic_wifi_home_android.pdfIn PDF document text
    • https://s3.amazonaws.com/mukutud/45499399348.pdfIn PDF document text
    • http://wexugemo.epizy.com/39515004475.pdfIn PDF document text
    • http://mekigif.epizy.com/how_to_pronounce_chiari_1_malformation.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_off000102e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102E7 6056 bytes
SHA-256: 23c46cf225c7addf82d1a777991f6453b0a68b1d0bf2792fc7df0982e971eccc
font_01_sfnt_off00011782.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11782 11040 bytes
SHA-256: bb030997a5c2c912821a01107ef37d5e01f739dafcac1535b72de33350a941fb

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