Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ffd18b666860da9…

MALICIOUS

PDF

76.9 KB Created: 2021-04-22 01:44:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 27cb08b7c52305002f7455dec4ea7c88 SHA-1: b102d14b77779c3451800f89c05aa8777127cda6 SHA-256: 9ffd18b666860da987fc71c35e6f9119d578ce1313831a63ef71f573c22632c5
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable hosting and link farms, indicating a phishing or malicious redirection attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with malicious documents designed to trick users into clicking links that lead to further compromise.

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://fokemale.ru/strik?utm_term=which+certification+is+best+for+network+security PDF link annotation
    • https://robavefozaxun.weebly.com/uploads/1/3/4/3/134379548/xabajula.pdfIn PDF document text
    • https://rokubupudila.weebly.com/uploads/1/3/1/8/131856034/gujobogas.pdfIn PDF document text
    • https://jalidinetuvumun.weebly.com/uploads/1/3/5/3/135333814/gesawezuko_pivurixuwe_juwujega.pdfIn PDF document text
    • http://siondez.ru/53420390606apvx3.pdfIn PDF document text
    • http://carishr.com/cch_to_sheet_trong_excelqf2e9.pdfIn PDF document text
    • https://siwizapetodid.weebly.com/uploads/1/3/4/0/134041585/a37549b.pdfIn PDF document text
    • http://cetakchantek.com/xutudusevatakuny5zde.pdfIn PDF document text
    • https://zovakobazala.weebly.com/uploads/1/3/1/4/131456363/dogofejixelere.pdfIn PDF document text
    • http://knitfqph.site/blue_is_the_warmest_color_watch_online_english_subtitles_free396ho.pdfIn PDF document text
    • http://pc-remont.website/enerpac_catalogo_prodottikv9zy.pdfIn PDF document text
    • https://cdn.sqhk.co/gidulikegel/jcgdjiQ/79716994660.pdfIn PDF document text
    • https://kikosizijup.weebly.com/uploads/1/3/1/3/131379594/jojuxigugelepaki.pdfIn PDF document text
    • https://cdn.sqhk.co/fowifabibu/icgcqif/pegowu.pdfIn PDF document text
    • https://vawirinivilil.weebly.com/uploads/1/3/4/3/134353209/sewuwujo.pdfIn PDF document text
    • https://cdn.sqhk.co/savageven/jhGgggf/totally_accurate_battle_simulator_kostenlos_online_spielen.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/fowikorejodi/lanonajofa.pdfIn PDF document text
    • https://s3.amazonaws.com/nazekisigiduz/19921671799.pdfIn PDF document text
    • https://s3.amazonaws.com/genijusemu/the_darkest_minds_cast_cole.pdfIn PDF document text
    • https://s3.amazonaws.com/ladojenefe/mozevijarozetudabuxiz.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_off0000ed37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED37 5348 bytes
SHA-256: ba8c95490cf702095817060ef29e5ceb69d7491e1e16301b8ef195e767bc6295
font_01_sfnt_off0000ff81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF81 11600 bytes
SHA-256: 93081dddd34e640218ad72cd5f372a5f39461a2cd028449fbc60c55783f2ee3f

Open this report in the interactive analyzer, or submit your own file for analysis.