Malicious PDF — malware analysis report

Static analysis result for SHA-256 6031e76e18851ca3…

MALICIOUS

PDF

80.1 KB Created: 2021-01-08 14:44:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: c8d4d1fd774ed8e09abaf655647134fa SHA-1: 9d24aaa11dbf31d55e586d84deb798e5dd20af6e SHA-256: 6031e76e18851ca3acf271ce71736c7bae8aa63344295f061f1bd3c6efaf43d4
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to Weebly-hosted PDFs, suggesting a link farm or redirection mechanism. The embedded URL 'https://traffnew.ru/123?utm_term=new+unblocked+games+6969' indicates a lure related to game downloads. ClamAV and ML classifiers strongly indicate malicious content, specifically phishing or trojan behavior.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffnew.ru/123?utm_term=new+unblocked+games+6969 PDF link annotation
    • https://mazogerivajusem.weebly.com/uploads/1/3/4/3/134341978/kabugiza_wefalalido_buluko.pdfIn PDF document text
    • https://vawudida.weebly.com/uploads/1/3/4/8/134890241/4132239.pdfIn PDF document text
    • https://nogenovone.weebly.com/uploads/1/3/4/7/134745979/8a8cdb34983c1.pdfIn PDF document text
    • https://suzokapiwewop.weebly.com/uploads/1/3/4/3/134351383/10765d1649f3.pdfIn PDF document text
    • https://rofexigu.weebly.com/uploads/1/3/0/7/130738805/bitenafowewu.pdfIn PDF document text
    • https://zexajupa.weebly.com/uploads/1/3/4/6/134692079/1544728.pdfIn PDF document text
    • https://gosasolana.weebly.com/uploads/1/3/4/5/134523876/817767.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/ziwuvijevo/6th_grade_reading_comprehension_worksheets_online.pdfIn PDF document text
    • https://s3.amazonaws.com/wapabefizosumi/36220504241.pdfIn PDF document text
    • https://s3.amazonaws.com/votuweroxigezog/palisi.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/jersey_auction_live.pdfIn PDF document text
    • https://s3.amazonaws.com/fusidejebi/facebook_messenger_lite_app_free.pdfIn PDF document text
    • https://s3.amazonaws.com/fajujiju/69473840736.pdfIn PDF document text
    • https://s3.amazonaws.com/pokixovuxik/sbcglobal.net_email_settings_outlook_2016.pdfIn PDF document text
    • https://s3.amazonaws.com/pusolefosex/la_blanda_palabra_calma_el_enojo.pdfIn PDF document text
    • https://s3.amazonaws.com/baxekojojexusol/fazusetetikux.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_off0000ef9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF9C 5492 bytes
SHA-256: 37e16d69868b2cc916ec214ae764944c7d6900a8b7c4998eaf93c30d3bce2abc
font_01_sfnt_off0001023d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1023D 10328 bytes
SHA-256: 100878d191446afdef53515a7ea40b17bbe212b0a069cf3433867f47f9593712
font_02_sfnt_off0001259c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1259C 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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