Malicious PDF — malware analysis report

Static analysis result for SHA-256 1114b47bd365cb3b…

MALICIOUS

PDF

96.4 KB Created: 2021-03-17 06:16:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: a1b3a517379c6e54943614adfb763c88 SHA-1: c541def69d6d98117628ff2518854fd8db85095e SHA-256: 1114b47bd365cb3bd8ee648568fb4391ec5f032a29742bcbbb7d35e04c4916bd
184 Risk Score

Malware Insights

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

The PDF contains multiple embedded links that redirect to known malicious or disposable hosting domains, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly support its malicious nature. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a spearphishing attachment designed to lead users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://dafemum.ru/award?keyword=beatriz+preciado+pdf+descargar In PDF document text
    • http://wulutano.mywebcommunity.org/dowoxowotiwajaro.pdfIn PDF document text
    • http://tublitalia.space/12191811079d9uku.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480383/normal_5fdc3b28a6c63.pdfIn PDF document text
    • http://tumbaa.space/slope_intercept_form_practice_worksheetaogzo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4493209/normal_5fe4b73c2751c.pdfIn PDF document text
    • http://gerododuxokamid.iblogger.org/where_can_i_learn_to_be_a_sniper.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367287/normal_602456b9ecb70.pdfIn PDF document text
    • http://lerob.info/jesapozezajurase0nc.pdfIn PDF document text
    • http://flowerport.market/kakeb1hkdv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476453/normal_5fe9cecaba57c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448103/normal_5ffbb4342f6a1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379034/normal_5ff9e16998c26.pdfIn PDF document text
    • http://titanof-filtr.ru/afrodisiac_comic_bookjih4d.pdfIn PDF document text
    • http://nusamovepi.22web.org/immunization_registry_form_103.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476288/normal_600c75d78a75f.pdfIn PDF document text
    • http://kogowetek.getenjoyment.net/59662217099.pdfIn PDF document text
    • http://silver35.ru/successful_probationary_period_letter_templatetw6j3.pdfIn PDF document text
    • http://republvinb.fun/journal_of_statistics_applications_and_probability_lettersf59r5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495390/normal_5fe139886c3b4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fadezanunadafik.myartsonline.com/descartes_meditations_1-3_summary.pdfIn PDF document text
    • http://pofuwumol.rf.gd/xunoxi.pdfIn PDF document text
    • http://zobatokuvanoz.epizy.com/namokese.pdfIn PDF document text
    • http://nerepigov.rf.gd/12765195527.pdfIn PDF document text
    • http://jiwodiw.myartsonline.com/kexigamavijogumafibogagek.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_off00013bc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13BC3 5388 bytes
SHA-256: 3f15ad1052e29acd16706a34f286d8518cc3013a42fe7ec8c95d627342149ebc
font_01_sfnt_off00014e33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14E33 12228 bytes
SHA-256: 9b1eeb6ede69055bf006c2417047f9859f6a3dc178a43eb9c6a056edec2842c5

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