Malicious PDF — malware analysis report

Static analysis result for SHA-256 a73b4f8c1a6b6aa2…

MALICIOUS

PDF

82.8 KB Created: 2021-03-07 21:18:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: ac6807a229ddcd3ce8c76ecd541391d0 SHA-1: d67285c0b1758e61988f6c24799c6d4b098a2ef4 SHA-256: a73b4f8c1a6b6aa2e7fc6404ba4fcb00f10f9c2b3dda1000f95bcd509bc4239f
104 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains embedded URLs and a visual download button, suggesting a social engineering lure to trick the user into downloading a payload. The presence of external URIs indicates a potential download or redirection mechanism.

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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://jumiwimov.ru/wix?keyword=at+last+a+life+paul+david+pdf+download PDF link annotation
    • http://gouliwer.online/ancient_dracolich_5e_statsjrxs2.pdfIn PDF document text
    • http://zzzmmmmejjj.space/research_methods_in_the_social_scien1xtw1.pdfIn PDF document text
    • http://power-guard.shop/ravaluwuvedesumd40h.pdfIn PDF document text
    • https://pinafizupefed.weebly.com/uploads/1/3/1/3/131380591/xorixusimi_wesama_miginupafuvego.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422627/normal_5ff3f805e22d5.pdfIn PDF document text
    • https://fizabogozof.weebly.com/uploads/1/3/2/8/132815807/e8db2285f0fe5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377662/normal_60025b2061855.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454179/normal_6028fbb53a49d.pdfIn PDF document text
    • https://vizokajobekaxa.weebly.com/uploads/1/3/0/9/130969885/buduvod_remel.pdfIn PDF document text
    • http://datinge.site/wuzegikijuzizibefawepifof2qc57.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393022/normal_5ff3ea8d00b2d.pdfIn PDF document text
    • http://godulonu.22web.org/ar_net_new_song.pdfIn PDF document text
    • http://timecodes.net/android_adb_shell_root_permissionon4b8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490534/normal_5fcd656e95a00.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411696/normal_603e2b1931914.pdfIn PDF document text
    • https://nikuwexipamojag.weebly.com/uploads/1/3/0/8/130813731/8b5b7f8aec2ea9.pdfIn PDF document text
    • https://anxietynomore.co.uk/wp-content/uploads/2018/04/Sample.mp3AfterIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/lolaritemukole/53244438789.pdfIn PDF document text
    • https://s3.amazonaws.com/jasadavebaga/pdf_file_test_page.pdfIn PDF document text
    • http://xazitew.epizy.com/ethical_dilemma.pdfIn PDF document text
    • https://s3.amazonaws.com/jasipefulaxiduj/blacks_law_dictionary_fifth_edition.pdfIn PDF document text
    • http://wumekupewug.rf.gd/anti_malware_free_for_windows_10.pdfIn PDF document text
    • https://s3.amazonaws.com/bofake/10132786221.pdfIn PDF document text
    • http://pizoxuwa.epizy.com/bach_piano_sheet_music.pdfIn PDF document text
    • http://begosene.epizy.com/adblock_plus_for_firefox.pdfIn PDF document text
    • https://s3.amazonaws.com/naxizugenabi/22906795086.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_off000108f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108F1 5080 bytes
SHA-256: 5e7bf9d982c72942ff0ab6bac3e9cf2f04a2f10436e1cd4195c19e04e13bc24f
font_01_sfnt_off00011a69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A69 10276 bytes
SHA-256: a5de3ef3630019bf11609fbfdef4ce2b7bed01fc81deb92a219f8d38ca65a50e

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