Malicious PDF — malware analysis report

Static analysis result for SHA-256 e22a634664180148…

MALICIOUS

PDF

70.2 KB Created: 2021-03-03 08:09:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 1ed2f38f2d530202290ea5f96e76991b SHA-1: cc8197e82d8619beda9b74549e81d44ab58086b3 SHA-256: e22a634664180148a5bd440ada67d4ed3dea58a53aef09fb19c5ebf6eae7450c
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to disposable domains and link farms, a common tactic for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious sites, likely for further exploitation.

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://mezovuduw.ru/strik?utm_term=bausch+and+lomb+antique+microscope PDF link annotation
    • https://dowizipolejufu.weebly.com/uploads/1/3/0/7/130775784/78430833007f.pdfIn PDF document text
    • http://kigumelez.medianewsonline.com/17886450101.pdfIn PDF document text
    • https://mowuvesetotodoj.weebly.com/uploads/1/3/0/9/130969800/902896b4fb7b.pdfIn PDF document text
    • https://cdn.sqhk.co/rovujesox/Xaig8XE/32464168280.pdfIn PDF document text
    • https://pujezifug.weebly.com/uploads/1/3/0/7/130738771/1d19560d924.pdfIn PDF document text
    • https://xaziribubeka.weebly.com/uploads/1/3/4/3/134397614/fokotowelewes_tovam.pdfIn PDF document text
    • https://nozojotama.weebly.com/uploads/1/3/4/5/134585139/terumujute.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/wizomoravazub/free_billing_information_generator.pdfIn PDF document text
    • https://s3.amazonaws.com/niwotipugonuvoz/faction_base_minecraft.pdfIn PDF document text
    • https://s3.amazonaws.com/debiwelof/chamara_weerasinghe_song_album.pdfIn PDF document text
    • https://s3.amazonaws.com/gonafoziguwewe/chori_chori_chupke_movie_all_song.pdfIn PDF document text
    • https://s3.amazonaws.com/jobavo/5968986312.pdfIn PDF document text
    • https://s3.amazonaws.com/pukaridimupo/walch_integrated_math_2_answer_key.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_off0000d35e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD35E 5628 bytes
SHA-256: ce684999edae6534dbc4760e219ef85baf497335e4801a3f9575f681b5f9678e
font_01_sfnt_off0000e645.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE645 11220 bytes
SHA-256: 777185e01c15d48ea545901af0c9a85f8c423a465696f2038b75cae75b736d0d

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