Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e24c54ee8e728ca…

MALICIOUS

PDF

78.8 KB Created: 2021-03-17 00:11:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 897a618519bd52933e24d09321b7ac90 SHA-1: 2e34218cea8afc5b469925e367d0cbb2c09d6b28 SHA-256: 6e24c54ee8e728ca7727c8093c8748d3b36fa7c7a716bb622a717c47e9a30933
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many of which are part of a link farm designed to manipulate search engine results. The embedded content suggests a lure related to a popular anime, aiming to trick users into clicking on these links. While no scripts were directly extracted, the PDF structure and heuristic firings indicate a phishing or redirection attempt, likely leading to further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

Heuristics 5

  • 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.
  • 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://leonvi.ru/wix?keyword=detektiv+conan+film+23+stream+deutsch
    • https://nanupubixo.weebly.com/uploads/1/3/0/9/130969545/sanigo.pdf
    • http://pabufit.22web.org/jugejorujunawaroke.pdf
    • https://cdn.sqhk.co/jupozaregu/igjiWge/wooden_chopping_board_care.pdf
    • https://cdn.sqhk.co/vedimurami/ddeLjjh/wosizalo.pdf
    • https://cdn-cms.f-static.net/uploads/4425211/normal_603e02b3df3b1.pdf
    • https://cdn-cms.f-static.net/uploads/4503578/normal_601266fec4d95.pdf
    • https://zabaruwizugode.weebly.com/uploads/1/3/4/5/134596412/pegilujarek_fekarewaxolit_zokagilefode.pdf
    • https://cdn-cms.f-static.net/uploads/4490725/normal_6012dc3981dec.pdf
    • https://jukirabupunux.weebly.com/uploads/1/3/0/8/130874410/zazojozonoderolusud.pdf
    • https://jevijoju.weebly.com/uploads/1/3/5/9/135978445/tekerok.pdf
    • https://cdn.sqhk.co/pinofizulag/gfihhju/32562063552.pdf
    • https://cdn.sqhk.co/tobijoge/jchijfL/carhartt_detroit_jacket_size_guide.pdf
    • http://zunejabilake.22web.org/89849872309.pdf
    • https://cdn.sqhk.co/podoxato/gi8hahj/92425858593.pdf
    • https://zubosevofugojat.weebly.com/uploads/1/3/4/3/134307347/xujolizi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/webipejonavuv/i_m_coming_home_ringtone_free.pdf
    • https://s3.amazonaws.com/xonaxevetaf/gewutagurulatejibelujosa.pdf
    • https://s3.amazonaws.com/gedesisumi/behavioural_management_approach.pdf
    • http://tabifag.rf.gd/26678745526.pdf
    • http://kijakina.epizy.com/define_biography.pdf
    • http://velosipu.epizy.com/adhd_assessment_tools.pdf
    • https://s3.amazonaws.com/figidireki/5811371466.pdf
    • https://s3.amazonaws.com/midipes/how_to_answer_are_you_single_question.pdf
    • https://s3.amazonaws.com/xoxaneral/days_of_wine_and_roses_lead_sheet.pdf
    • https://s3.amazonaws.com/nilafafakem/kiwujuwaxaxe.pdf
    • https://s3.amazonaws.com/rutufokedizon/bijodol.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f1c5.bin
986b2297ae8b425de3002be2ec435cb84fc93fd30bff198fa05716efe62ca7ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF1C5 5680 bytes
font_01_sfnt_off000104fe.bin
f79fd3d58909f2963fc00b7b461649465fb46497683d949faa2f3df8ad924bf5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x104FE 11308 bytes

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