Malicious PDF — malware analysis report

Static analysis result for SHA-256 65497b692a692757…

MALICIOUS

PDF

76.3 KB Created: 2021-03-21 04:12:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: ed4153d2e21724f4d55d6e7a06c69314 SHA-1: 7530f31df0cee669fb96d3c0bee4f4ba7f3c2495 SHA-256: 65497b692a69275793fd672a3f78aae20a92d44f3b297c9022026f6689d42985
154 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 0.8673

Heuristics 4

  • 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
  • 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://baarspo.ru/award?keyword=sixth+grade+math+worksheets+pdf PDF link annotation
    • http://marketeuro.pro/gapejioyll9.pdfIn PDF document text
    • http://drnextact.xyz/rugedodinows6ikv.pdfIn PDF document text
    • http://devgame.design/fopafufigogogefuvqyf1k.pdfIn PDF document text
    • https://vipegiwofavagob.weebly.com/uploads/1/3/5/3/135302795/f12ef0.pdfIn PDF document text
    • http://siviveko.getenjoyment.net/pelebu.pdfIn PDF document text
    • http://kitafoged.medianewsonline.com/song_to_remember_mean_median_mode_and_range.pdfIn PDF document text
    • https://rarerosedipise.weebly.com/uploads/1/3/4/8/134876587/soruluv.pdfIn PDF document text
    • http://instgrmmverifiedbadge.com/12712427197ys9ok.pdfIn PDF document text
    • http://replyua.site/61262038016qns09.pdfIn PDF document text
    • https://buliduxefexefux.weebly.com/uploads/1/3/1/6/131636978/5848211.pdfIn PDF document text
    • http://tameeniraq.com/how_to_set_the_time_on_adidas_digital_watchx4ra2.pdfIn PDF document text
    • http://homearfes.com/damunevudofevarulawatejuxchbs.pdfIn PDF document text
    • https://fewebiporunivag.weebly.com/uploads/1/3/0/7/130775920/vebizewawexex.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/baposivarabuj/86014918059.pdfIn PDF document text
    • https://s3.amazonaws.com/zarusegibitumet/benibotunepeba.pdfIn PDF document text
    • https://s3.amazonaws.com/tawosutosuxi/34190742563.pdfIn PDF document text
    • http://dasobiviwadodaj.atwebpages.com/3059223296.pdfIn PDF document text
    • http://wiwosotu.myartsonline.com/puxebuxafinarom.pdfIn PDF document text
    • https://s3.amazonaws.com/feliso/zibubaz.pdfIn PDF document text
    • http://vubuzixefixa.onlinewebshop.net/74821234562.pdfIn PDF document text
    • https://s3.amazonaws.com/tarizirefevifab/75312642708.pdfIn PDF document text
    • https://s3.amazonaws.com/lemerisinivum/56896297424.pdfIn PDF document text
    • https://s3.amazonaws.com/xufujofaleki/50345385367.pdfIn PDF document text
    • https://s3.amazonaws.com/tixedujegibex/zagetigojazaragorusonoj.pdfIn PDF document text
    • https://s3.amazonaws.com/lupebesu/61009567839.pdfIn 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_off0000f05b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF05B 5432 bytes
SHA-256: cd3cbb120941d1230c813e93c41c77fc2ab46b417b2d7d8cc70d61fcc6fa6538
font_01_sfnt_off000102ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102EF 11044 bytes
SHA-256: 956565ac02fd00b5eb74fe4fdc04ab61af81daef0bb9524b0b9cf4de1427aeda