Malicious PDF — malware analysis report

Static analysis result for SHA-256 b89008b748d37372…

MALICIOUS

PDF

73.0 KB Created: 2021-02-16 01:19:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 1677d3fb6d9226afeba4bbf8371dc1c1 SHA-1: 492c28121ec5453e8d8654dc70b4c7874e579f66 SHA-256: b89008b748d37372e24acdf599a11ef0b6df806f3917960be76dece024688713
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document body, though truncated, contains text related to printer setup and includes a URL that appears to be a redirector for malicious content. The presence of numerous external URIs, many hosted on disposable domains, further supports a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jottigo.ru/strik?utm_term=how+to+setup+my+hp+3050+wireless+printer PDF link annotation
    • https://cdn.sqhk.co/wuzosiboweja/8jgieJ4/28245199178.pdfIn PDF document text
    • http://tomogorman.com/masudivifiledegerotevokae6b2.pdfIn PDF document text
    • http://ig-objectionform.com/free_website_footer_templatestnzul.pdfIn PDF document text
    • http://betmoy56.com/zosuwezidaedaa5.pdfIn PDF document text
    • http://fepekasizu.iblogger.org/chain_rule_worksheet_tes.pdfIn PDF document text
    • https://cdn.sqhk.co/jinuzekovodi/yReggNq/susiwebagis.pdfIn PDF document text
    • http://verification-help.com/non_circumvention_clause_templatemigcs.pdfIn PDF document text
    • http://zalavsky.ru/endothermic_exothermic_lab_answer_keyjja7p.pdfIn PDF document text
    • http://nikaold.site/suxegukcnv5.pdfIn PDF document text
    • http://particulieres-societegenerale.best/brightsign_ls424_user_manualrh67g.pdfIn PDF document text
    • http://songkfrk.site/688108142474ysuw.pdfIn PDF document text
    • https://cdn.sqhk.co/daguvemet/ege5ogj/como_descargar_mine_survival_para_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/penuvipaw/Z8jaNgj/ba_dum_tss_crossword_nyt.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bajobakokela.epizy.com/simple_agenda_template.pdfIn PDF document text
    • http://toramowajo.epizy.com/pikofomejo.pdfIn PDF document text
    • http://lorabedujeweb.epizy.com/acid_rain_formation.pdfIn PDF document text
    • http://nawuxek.rf.gd/27018281079.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_off0000e02f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE02F 5432 bytes
SHA-256: 0492d66c7084507631525bf7a0799fdf59cb1ce777a522ba711d940c2a7f9fff
font_01_sfnt_off0000f29c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF29C 10456 bytes
SHA-256: 17185c3bbf5f5ff529feadf3a4e9d1d5e8a941a3184610642b69580d86f52601

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