Malicious PDF — malware analysis report

Static analysis result for SHA-256 65407ff46b8a9a20…

MALICIOUS

PDF

77.1 KB Created: 2021-03-11 02:07:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 64ee9df23f16e7c3e584062cd61c779b SHA-1: 63d3a338777bb5dc440fa899503487d8c1b0da00 SHA-256: 65407ff46b8a9a203692042bb63879cd91d8ed7e6564d881b4642c9b125c742b
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 0.9998

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://dugedepap.ru/strik?utm_term=white+fang+movie+review+plugged+in PDF link annotation
    • https://sekilulijafos.weebly.com/uploads/1/3/1/4/131438177/biriju.pdfIn PDF document text
    • https://cdn.sqhk.co/nokotadi/icPjbgi/8010126865.pdfIn PDF document text
    • https://limuvowefegepud.weebly.com/uploads/1/3/4/5/134509231/bekefimazimufuxus.pdfIn PDF document text
    • https://cdn.sqhk.co/bumogebiz/ffQJgg7/43848915169.pdfIn PDF document text
    • http://freud.icu/xijutuxugifuxibom3fx02.pdfIn PDF document text
    • http://jumbochecker.com/tigefopakiwuvuxevetizebo5w92s.pdfIn PDF document text
    • https://xekanowodupap.weebly.com/uploads/1/3/0/7/130739303/gukafelod.pdfIn PDF document text
    • http://gamuxiwami.getenjoyment.net/nalasepexonimixibuvetuno.pdfIn PDF document text
    • https://motanaweda.weebly.com/uploads/1/3/4/3/134316912/kimafej-zebupo.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/towutoginadivu/25162624388.pdfIn PDF document text
    • https://s3.amazonaws.com/xuxifuzituwu/vsco_full_for_ios.pdfIn PDF document text
    • http://dowuvoduwitovos.atwebpages.com/how_to_install_tp-link_tl-wn725n_without_cd.pdfIn PDF document text
    • https://s3.amazonaws.com/fadedosi/core_java_syllabus_by_oracle.pdfIn PDF document text
    • http://pujumek.myartsonline.com/76665996018.pdfIn PDF document text
    • https://s3.amazonaws.com/tafogusegabomu/b._o._t_apk_mod.pdfIn PDF document text
    • http://kopurelotalad.onlinewebshop.net/new_testament_bible_trivia_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/befafuni/black_panther_hd_4k_wallpaper.pdfIn PDF document text
    • http://mijovutotukedes.onlinewebshop.net/add_text_to_file_free.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f090.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF090 5440 bytes
SHA-256: 1bb743fb36e547409ccc9d6248b85bf86996d95649c63a13b5db0ba0b2eb3f20
font_01_sfnt_off0001030c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1030C 10764 bytes
SHA-256: 3195d1524e8a0aa085775c322de549134b1759d86f2ac9e63e479feecd94ae5f

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