Malicious PDF — malware analysis report

Static analysis result for SHA-256 827430181a2cf5ea…

MALICIOUS

PDF

77.7 KB Created: 2021-02-21 14:01:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 2189aa1b78e7dc5ba4b57254535a6166 SHA-1: 9ab62ae24d470051ab90179d79e3deebcfec22d1 SHA-256: 827430181a2cf5ea29353a2be4325fd4b4a796e97cccb10524e697e64a17429d
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://jacksth.ru/123?utm_term=does+power+have+a+book PDF link annotation
    • https://cdn.sqhk.co/felebamifuk/rzxMjgf/tujejotagodafakepujojis.pdfIn PDF document text
    • https://cdn.sqhk.co/marixefe/mgfijic/my_android_app_is_very_slow.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404299/normal_60001ad5ddb85.pdfIn PDF document text
    • https://cdn.sqhk.co/josurowelimu/hc4gdxh/90693441891.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452389/normal_6027992347877.pdfIn PDF document text
    • https://cdn.sqhk.co/bivuwusim/6gf8Bhc/satisariburufubazipe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449769/normal_5ff8c54d3f868.pdfIn PDF document text
    • https://cdn.sqhk.co/wogefosa/fGEjiTR/singing_machine_app_install.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374978/normal_5fef34cb18874.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476434/normal_5fe248b21e25b.pdfIn PDF document text
    • https://cdn.sqhk.co/bejadelu/BjeHhjH/homeroom_in_spanish_means.pdfIn PDF document text
    • https://cdn.sqhk.co/ruxukulalodi/SPidhcR/24431581903.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409623/normal_60120925e43d2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/wupagivoz/the_binding_of_isaac_rebirth_igg.pdfIn PDF document text
    • https://s3.amazonaws.com/vonutavekip/kenakatak.pdfIn PDF document text
    • https://s3.amazonaws.com/liguwubore/auto-_tune_evo_vst_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/simujix/vuwagasarog.pdfIn PDF document text
    • https://s3.amazonaws.com/sedimeraxufi/tygris_galv_spray_data_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/semuxemakaw/zolabubagan.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e570.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE570 4784 bytes
SHA-256: add4225db4d459905a834a651ea9918fa84ec3978b77b818a93fdbf53933b641
font_01_sfnt_off0000f5d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5D2 11116 bytes
SHA-256: b85459bdfbd86fcb9e9e22273174f8f23cd2e4aa37f11aa2d1c4f033457592a1
font_02_sfnt_off00011b9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B9E 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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