Malicious PDF — malware analysis report

Static analysis result for SHA-256 a997812356fdaabb…

MALICIOUS

PDF

71.7 KB Created: 2021-02-15 00:41:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 751ca5b5de43a9e5dc0ec7398661c59c SHA-1: 5f8a91b8a8ae329469767c6109492c5e33f2aeea SHA-256: a997812356fdaabb3cdce56e72f3bb7fe718b5952cfa039894b6a81e2280134b
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with a primary external URI pointing to 'jottigo.ru'. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The presence of many disposable hosting links further supports this. No scripts were extracted, but the document's structure and embedded links suggest it's designed to redirect users to malicious content.

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://jottigo.ru/wix?keyword=install+hunter+remote+control+ceiling+fan PDF link annotation
    • http://chempion.coffee/nenikamawefuvujixexec9klq.pdfIn PDF document text
    • http://tuzirifuxeza.iblogger.org/27878708527.pdfIn PDF document text
    • https://gizutiki.weebly.com/uploads/1/3/4/4/134478998/9299069.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393515/normal_5fd0ed6b74c9b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408997/normal_6009611715698.pdfIn PDF document text
    • http://zanartcc.net/tv_serials_app_freea5yvr.pdfIn PDF document text
    • https://sitofozaliwi.weebly.com/uploads/1/3/4/3/134355749/8830100.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393197/normal_600f9d4be6731.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444643/normal_5fe41b6bf1756.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388050/normal_6023659e725eb.pdfIn PDF document text
    • https://bobitakakafaze.weebly.com/uploads/1/3/5/2/135297082/gipexefivogaj.pdfIn PDF document text
    • http://jogedisilokazex.iblogger.org/56944743048.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/xeropizuwe/a._i._sha_web_series.pdfIn PDF document text
    • http://xegiseko.epizy.com/91980515980.pdfIn PDF document text
    • https://s3.amazonaws.com/vuraradaso/bureaucratic_theory_max_weber.pdfIn PDF document text
    • http://tesoduv.rf.gd/xawikamixinerika.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_off0000dd18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD18 5232 bytes
SHA-256: 41580de55ef85f828126446e05e5b3afa9af0b15e3065f0c909eb602b74b1027
font_01_sfnt_off0000eeb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEB9 10276 bytes
SHA-256: b39bb9b2a403237f5456cede1d225639c03e56d61c956f7d243c82aaa5ff1a47

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