Malicious PDF — malware analysis report

Static analysis result for SHA-256 11d04383c22445af…

MALICIOUS

PDF

70.1 KB Created: 2021-02-02 19:39:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 4bbf22a743ea6cb40f61979d30e82908 SHA-1: db7d18c747c968238ae3793b14d8024562428eb5 SHA-256: 11d04383c22445afe54ce52a40977dab02733f7779fcab89020bb597fc7e2fb2
126 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics as malicious, including a high ML score and ClamAV detection for phishing and trojan activity. It contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm or redirection mechanism. The document body, though heavily obfuscated, appears to be a lure related to business plan templates, aligning with phishing or malware distribution tactics.

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 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://leonvi.ru/aws?utm_term=business+plan+template+executive+summary PDF link annotation
    • http://idealicaufficiale.website/critical_role_character_sheets_season_2u7tma.pdfIn PDF document text
    • http://galoomer.online/debakomope5obw1.pdfIn PDF document text
    • http://avbox.org/sbac_math_practice_questions_5th_gratl3uf.pdfIn PDF document text
    • https://cdn.sqhk.co/sasibasodiwu/EhjgfT6/mow_zombies_mod_apk_1._4._0.pdfIn PDF document text
    • https://cdn.sqhk.co/pugusomimoro/euibhgJ/fasadelotazaxo.pdfIn PDF document text
    • http://visemomasa.66ghz.com/julitogise.pdfIn PDF document text
    • http://byseles.xyz/movies_like_touch_the_wallbwj9f.pdfIn PDF document text
    • https://cdn.sqhk.co/zidexamuwela/urgjdhi/poxolefatuvekopuz.pdfIn PDF document text
    • https://pakajifovajopif.weebly.com/uploads/1/3/1/6/131607230/169d7.pdfIn PDF document text
    • http://lnstagram-blue-badge-form.com/video_production_quotation_samplehd8h5.pdfIn PDF document text
    • https://cdn.sqhk.co/pujixefan/jb4sige/fuwaruzaguzupije.pdfIn PDF document text
    • http://tapadobav.iblogger.org/boboiboy_drawing_apk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xapogoburotoj.epizy.com/raxel.pdfIn PDF document text
    • http://walexesanub.rf.gd/photo_editor_software_for_android_mobile.pdfIn PDF document text
    • http://samowegepor.rf.gd/tn_hsc_marksheet_2019.pdfIn PDF document text
    • http://dowupozor.epizy.com/beginner_pilates_reformer_classes_near_me.pdfIn PDF document text
    • http://teguxivufir.rf.gd/paponajujexejeponibig.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d4ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4AD 5360 bytes
SHA-256: 75a795b7024fe42cbbf14cd296a7f2913dfffcd7dd20aebe07b5810b243feca8
font_01_sfnt_off0000e6e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6E0 10704 bytes
SHA-256: e8264dfc6883a1e0591d3fc5448b10731e7f895cc1b565040eb5b79a23b8e52b

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