Malicious PDF — malware analysis report

Static analysis result for SHA-256 8eb11107b7ee9638…

MALICIOUS

PDF

83.3 KB Created: 2021-03-22 01:48:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 9ca67f0badf4edfe6cb34daaff66480a SHA-1: b9368154d28b90f542cd22f223705ca67ad2ee84 SHA-256: 8eb11107b7ee96387e66972c91b290e3d1d4c2b58a9c93d3554ffce59ca844b2
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a large number of external links, with one prominent link pointing to 'https://xezojetit.ru/strik?utm_term=most+dangerous+game+movie+2020', suggesting a phishing or malware distribution attempt. ClamAV and ML heuristics also flagged this PDF as malicious, specifically as a phishing trojan. The presence of embedded URLs and the link farm heuristic indicate an attempt to direct users to malicious content.

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
  • 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/strik?utm_term=most+dangerous+game+movie+2020 PDF link annotation
    • https://bizunasudene.weebly.com/uploads/1/3/5/3/135345394/3372704.pdfIn PDF document text
    • https://nifebupamej.weebly.com/uploads/1/3/1/6/131607321/zevuxiteve-darumesixado.pdfIn PDF document text
    • https://pejupatuwotim.weebly.com/uploads/1/3/2/8/132814375/xokoje-muparemu-sutizebuxos-kiveriduti.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407989/normal_5fedaeb041740.pdfIn PDF document text
    • https://demifoji.weebly.com/uploads/1/3/4/3/134317184/7545179.pdfIn PDF document text
    • https://cdn.sqhk.co/xukigipeduve/Xjaogcw/jisudasojabekujaw.pdfIn PDF document text
    • https://cdn.sqhk.co/vumorumuvogi/iFjaohj/hoplite_armor_helmet_review.pdfIn PDF document text
    • https://cdn.sqhk.co/gaxumisi/hfBjcjd/lerononitifilibefa.pdfIn PDF document text
    • https://dujomujur.weebly.com/uploads/1/3/4/8/134883281/bab48.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476416/normal_602782c79750d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451352/normal_60225496b21cf.pdfIn PDF document text
    • https://cdn.sqhk.co/kavejufa/gc8hjhj/aesthetic_tumblr_backgrounds_yellow.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bibejovixapis/zebowofirasibibonulaluguw.pdfIn PDF document text
    • https://s3.amazonaws.com/dudigonifu/android_studio_latest_version_32_bit.pdfIn PDF document text
    • https://s3.amazonaws.com/pivetuzadujo/51070501417.pdfIn PDF document text
    • https://s3.amazonaws.com/lekizopiloref/what_is_the_main_idea_of_touching_spirit_bear.pdfIn PDF document text
    • https://s3.amazonaws.com/juliziwojatige/cultivation_theory_of_mass_communication_ppt.pdfIn PDF document text
    • https://s3.amazonaws.com/takurugilij/35476574489.pdfIn PDF document text
    • https://s3.amazonaws.com/rabewiruzitewa/diamond_aircraft_parts_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/libusamagowuvo/daddy_s_home_1_parents_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/bolovopizonuki/jeduwipogijagurof.pdfIn PDF document text
    • https://s3.amazonaws.com/boxujetanonikuv/ipsos_i_say_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/leteraxewe/73592972131.pdfIn PDF document text
    • https://s3.amazonaws.com/dukajevo/82458467742.pdfIn PDF document text
    • https://s3.amazonaws.com/vazisi/49463110073.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_off00010858.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10858 5452 bytes
SHA-256: 81c8a6390a0f87901c4629bf7fe14058d9e53017ea09f5e401624cfc4bbf82cf
font_01_sfnt_off00011ade.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11ADE 10796 bytes
SHA-256: de6466de8da758c1aa0aa70e386b128180e9ae7ce41fcb839662613e651ce7de

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