Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc2217a6147562b0…

MALICIOUS

PDF

75.4 KB Created: 2021-03-14 05:09:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 8f1e181a6cbfbdab4f71c2c058a0380c SHA-1: 58c2754d06206b421dfd045ba44603b102e4f25a SHA-256: fc2217a6147562b020dead7adb554e5c309d7ed534140e32b871e74abe1a15ec
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many pointing to disposable domains, indicative of a link farm or phishing lure. Heuristics like 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'ML_NYX_PDF_MALICIOUS' strongly suggest malicious intent. The ClamAV detection further confirms this, identifying it as 'Pdf.Phishing.Trojan'. The primary attack pattern involves directing users to external, potentially malicious, websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://botokaw.ru/wix?keyword=palomita+de+la+paz+letra PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4370055/normal_6033184aa4fba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478950/normal_6046937ac111c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386347/normal_6011d887ba323.pdfIn PDF document text
    • https://cdn.sqhk.co/lojewewure/d7hiihe/my_talking_angela_pictures.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4493195/normal_5fca6cc237377.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448740/normal_6017764c69ebf.pdfIn PDF document text
    • http://odemebayisitrafik.com/368237709298dx1x.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476941/normal_5fd0429c50655.pdfIn PDF document text
    • http://itgermany.net/6187673927950ycq.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392439/normal_6049ad6d40af7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384464/normal_604d6e5b263f2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4504788/normal_5fe5d4f5c8e93.pdfIn PDF document text
    • http://f13x.xyz/new_moon_november_2020_pacific_timelbhbf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445130/normal_602a48600f93f.pdfIn PDF document text
    • https://cdn.sqhk.co/gupimupiset/jdaI0MC/free_tv_shows_app_apk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464735/normal_5fe0a0c22c12a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471464/normal_601ba8d2e2667.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407318/normal_5ffa07adbd66d.pdfIn PDF document text
    • http://uchebnoe.website/mulan_reflection_flute_sheet_music5nclm.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499283/normal_60442569b9346.pdfIn PDF document text
    • http://alexandreablog.com/tamatem_mod_apkudney.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450878/normal_5fde8bc58727b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000db6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB6B 3984 bytes
SHA-256: 264f699bcb5e04aa752e2da55f3a5f6cb805050b487b8b80ce51270489f4f664
font_01_sfnt_off0000e97e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE97E 4976 bytes
SHA-256: 5deddeabe8fd607530f13fe91540a9cd414db50e17184d4d40241e6f9bbe1cbb
font_02_sfnt_off0000fa5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA5A 10872 bytes
SHA-256: 4e28966523b771ca5b94da37feb0cebd5f140d9e4b0d94bb859a84f38a1f5269

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