Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a15e0be65355b67…

MALICIOUS

PDF

81.7 KB Created: 2021-05-14 07:56:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 7748f58595c34c3d8b96e2a293d550c8 SHA-1: ece59681c0e51aae5433437a3ae6e952f5a01267 SHA-256: 0a15e0be65355b67ccf181393e25b67a87eec17a507992d6d392c6c139b9a06d
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-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://leonvi.ru/strik?utm_term=how+to+unlock+a+whirlpool+double+oven PDF link annotation
    • http://egosikenclub.com/334437067077cool.pdfIn PDF document text
    • http://vosalax.22web.org/aol_for_windows_8._1.pdfIn PDF document text
    • http://ellmax-site.xyz/blue_bloods_episode_guide_2019ws9l7.pdfIn PDF document text
    • https://dumaxenuwumav.weebly.com/uploads/1/3/3/9/133997891/1113737d7.pdfIn PDF document text
    • http://jitokinut.iblogger.org/dosuxajebotis.pdfIn PDF document text
    • https://cdn.sqhk.co/vexavudakepa/dpShgjb/quran_in_roman_english_download.pdfIn PDF document text
    • https://nazuvunu.weebly.com/uploads/1/3/4/4/134438845/2351917.pdfIn PDF document text
    • https://cdn.sqhk.co/xupodafib/ibjcjaf/78633574656.pdfIn PDF document text
    • http://kodupebomabugu.iblogger.org/xowetutetarujuvak.pdfIn PDF document text
    • http://vavimaj.iblogger.org/dapina.pdfIn PDF document text
    • http://trend-sales.fun/98921864974xdldv.pdfIn PDF document text
    • https://cdn.sqhk.co/pujixefan/hfje0jg/zojuzowapevidot.pdfIn PDF document text
    • https://cdn.sqhk.co/norejasiwiza/djfhb9g/tip_top_video_download_free.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/podawakumepewez/highway_400_traffic_report_barrie.pdfIn PDF document text
    • http://piwodapasolok.rf.gd/61069517316.pdfIn PDF document text
    • https://s3.amazonaws.com/nunakixuma/litalesozigamipirawowojo.pdfIn PDF document text
    • https://s3.amazonaws.com/baxunaf/78741662964.pdfIn PDF document text
    • https://s3.amazonaws.com/xeroguru/report_handicap_placard_abuse_california.pdfIn PDF document text
    • https://s3.amazonaws.com/bokexizometun/xumeloki.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f1ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1EA 5184 bytes
SHA-256: f1e3f2e6634b055f3e3b3538e2f5ca119228e599fe2980b13fc88ecf696e22d4
font_01_sfnt_off0001038e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1038E 12000 bytes
SHA-256: a0e0f38d1c4e0f2ed3a28460ffbb77b6db571919e2d43d5460cc1491a91f337e
font_02_sfnt_off00012b39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B39 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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