Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0022266ff90cae9…

MALICIOUS

PDF

79.9 KB Created: 2021-03-26 19:46:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: abbc7dd969b05f252f8c0d69b9027591 SHA-1: 9ca6050b5610b9488adbd89eeae748f694603553 SHA-256: d0022266ff90cae92279bf671404d016ea783324bf3c5f80239d0ea09c6fc97a
126 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified as a link farm on disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://pelibifir.ru/award?keyword=basic+spatial+analysis+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4367674/normal_5feb5e4a2eefe.pdfIn PDF document text
    • http://letgtma.bid/wesosanejidapn5e78.pdfIn PDF document text
    • https://cdn.sqhk.co/xanodujijefu/ehhbhfC/vefinokaladoxes.pdfIn PDF document text
    • http://icily.xyz/can_a_commercial_lease_be_month_to_month1iniu.pdfIn PDF document text
    • http://uscreditreport2021.info/sketchup_pro_free_download_macub2dy.pdfIn PDF document text
    • http://stopro.store/72596952287iuebd.pdfIn PDF document text
    • http://hamlikjorettoop.ru/eventide_slavic_fable_free_downloadahu7d.pdfIn PDF document text
    • http://creditscorefix.info/dd_3.5_classes_tier_listzxpw0.pdfIn PDF document text
    • http://koprovk.xyz/fufofeduvotuvidekozipabumauh7y.pdfIn PDF document text
    • http://alania365.ru/67155864444q9x1.pdfIn PDF document text
    • http://allieshouseofhope.com/durepatufub2vk3a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428061/normal_603eab79e3889.pdfIn PDF document text
    • https://cdn.sqhk.co/gabebutiz/dRtgg1K/11749790570.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/rexogeguxosix/84203554274.pdfIn PDF document text
    • http://sopudekazulute.rf.gd/xuvatagixurijumer.pdfIn PDF document text
    • https://s3.amazonaws.com/lupuvogotog/jaratakazupozeso.pdfIn PDF document text
    • http://xuvufajozurez.rf.gd/bissell_proheat_2x_premier_parts.pdfIn PDF document text
    • https://s3.amazonaws.com/rurovikejigibu/13059816803.pdfIn PDF document text
    • http://denisilexi.rf.gd/water_pollution_project_in_bengali_language.pdfIn PDF document text
    • http://vutakeba.epizy.com/65453738076.pdfIn PDF document text
    • https://s3.amazonaws.com/galinikagopit/48251848007.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_off0000f0eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0EB 4764 bytes
SHA-256: 57ac2095e4178747c502037015d98d2727382c38568dac00bd19693ff8f9637a
font_01_sfnt_off00010129.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10129 10284 bytes
SHA-256: fe9d6ef9851fd03aa3081de0119d3f171d0d35aa1236dc3fa0388f86208916d3
font_02_sfnt_off0001241f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1241F 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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