Malicious PDF — malware analysis report

Static analysis result for SHA-256 132bcbf65c04f8f1…

MALICIOUS

PDF

78.5 KB Created: 2021-05-17 08:35:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: c01ee0eb3dc1529385e00cd42f1cd16c SHA-1: 732392ed9b1b85d37d65b6922ed0615c5158726a SHA-256: 132bcbf65c04f8f18fe10abd9433ccf678b49682b594e68e75c7960d83a37b18
156 Risk Score

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 a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://soxebez.ru/strik?utm_term=beethoven+piano+sonata+op+10+no+1+analysis PDF link annotation
    • https://fitatopiwize.weebly.com/uploads/1/3/0/7/130739398/futibob.pdfIn PDF document text
    • https://vugawijop.weebly.com/uploads/1/3/4/5/134594760/jinibovinuf_pubakufumawap_soselodoxigog_levoxujibuxafo.pdfIn PDF document text
    • https://cdn.sqhk.co/zatufora/5gfgeuS/22158133805.pdfIn PDF document text
    • https://cdn.sqhk.co/ketofebem/c3jdida/samibiwosa.pdfIn PDF document text
    • https://cdn.sqhk.co/nisisepolo/jf2hhig/word_wars_documentary_download.pdfIn PDF document text
    • https://girawosanisab.weebly.com/uploads/1/3/0/7/130740609/ledokewosazowawus.pdfIn PDF document text
    • https://cdn.sqhk.co/xovikojux/HhdjeUP/76749295912.pdfIn PDF document text
    • https://vosuzupitozom.weebly.com/uploads/1/3/5/3/135313705/e49365d51a9af6.pdfIn PDF document text
    • https://fotaluxig.weebly.com/uploads/1/3/5/9/135973299/tezenabu.pdfIn PDF document text
    • https://rufogeror.weebly.com/uploads/1/3/4/6/134664275/3115856.pdfIn PDF document text
    • https://cdn.sqhk.co/bobavijiwoba/ge5thdU/best_field_goal_kicking_android_game.pdfIn PDF document text
    • https://pagebuso.weebly.com/uploads/1/3/5/9/135972497/ketivetaduf_zevefelevilip_wuvabisaviwit.pdfIn PDF document text
    • https://paniwotipetusu.weebly.com/uploads/1/3/4/6/134614288/8547399.pdfIn PDF document text
    • https://kitawusew.weebly.com/uploads/1/3/4/2/134234725/naxopavemewogigepa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fonugaxow.epizy.com/80559640968.pdfIn PDF document text
    • http://gidetux.rf.gd/70914697523.pdfIn PDF document text
    • https://s3.amazonaws.com/bewibiwat/27741938824.pdfIn PDF document text
    • https://s3.amazonaws.com/zarusegibitumet/how_to_screw_wood_planks_together.pdfIn PDF document text
    • https://s3.amazonaws.com/zemunomipazikez/52367629458.pdfIn PDF document text
    • https://s3.amazonaws.com/jezekemunidup/competitive_intelligence_report.pdfIn PDF document text
    • https://5457524e-bace-410a-9ce7-c8d8bc0eedea.filesusr.com/ugd/f0ffd0_b57ada481d11481588514de96161b2fa.pdf?index=trueIn PDF document text
    • https://9610c43f-1b2a-4a8a-b660-75aaf3908198.filesusr.com/ugd/286fb8_e8958011f7b24284b6550b89d51573db.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kefiperizonofu/dehumidifiers_reviews_consumer_reports.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_off0000f298.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF298 5216 bytes
SHA-256: 6d900bb0f8d18625b2d4065c53acb24368594d33253b6fc79b6de882539e1f5e
font_01_sfnt_off00010468.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10468 12308 bytes
SHA-256: 87526182df77d620df55e7f534d1e359ba97aac8149b7c5da48e99f69833878a

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