Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2bd2c354a621316…

MALICIOUS

PDF

76.9 KB Created: 2021-03-01 20:35:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 5bd7b0c1dc69a14974771a6698b1fb3c SHA-1: 5d76facb4089d6b2125ab89aae95161fe88e963d SHA-256: b2bd2c354a621316b7bd468808c79b45f68884a55ba054febba90d7d14495470
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous external URIs pointing to disposable hosting and link farms, suggesting an attempt to redirect users to malicious sites. The document body, though heavily obfuscated, contains text related to 'plot diagram example' and 'beauty and the beast', likely a lure to disguise the malicious intent. No scripts were extracted, but the PDF structure and embedded URLs strongly suggest it's designed to lead users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://botokaw.ru/strik?utm_term=plot+diagram+example+beauty+and+the+beast PDF link annotation
    • https://cdn.sqhk.co/zezegawutogu/BhggjiB/78973205925.pdfIn PDF document text
    • http://kikababono.mywebcommunity.org/propiedades_fisicas_y_mecanicas_de_los_materiales_de_construccion.pdfIn PDF document text
    • http://hangookoil.ru/22790424944912f.pdfIn PDF document text
    • https://cdn.sqhk.co/muwanije/ubLWehg/international_code_to_call_pakistan_from_usa.pdfIn PDF document text
    • http://marketop.club/zombie_killer_squad_ranksgghe4.pdfIn PDF document text
    • https://cdn.sqhk.co/kazamepa/CUQjcv7/921128439.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492294/normal_5fea41e0e0cb5.pdfIn PDF document text
    • http://fumexijana.getenjoyment.net/94406107398.pdfIn PDF document text
    • http://idealica-italiaufficiale.website/zisimidapafeduwafitictnkw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://s3.amazonaws.com/lekelepowo/69816683139.pdfIn PDF document text
    • http://nosigegu.onlinewebshop.net/verabub.pdfIn PDF document text
    • https://s3.amazonaws.com/xebuvuwov/89731742101.pdfIn PDF document text
    • https://s3.amazonaws.com/tabobujimo/kefuluva.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_off0000dc47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC47 5684 bytes
SHA-256: 9d62426b9596d84d42e092eb9c74930c8d7a3fb2692062a268fd1700f94d32e5
font_01_sfnt_off0000ef7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF7E 12028 bytes
SHA-256: d8981b8e10b5dd403f24594183dd0511523885f97c613cc0781f36ade84972ae
font_02_sfnt_off0001188f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1188F 3564 bytes
SHA-256: 3884efeabfa10cbf7c0e7f4d7cad1e0b8aecf32bc319c8ab89931406b1aa9d1e

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