Malicious PDF — malware analysis report

Static analysis result for SHA-256 93d0f931e7c9ac95…

MALICIOUS

PDF

75.6 KB Created: 2021-04-02 19:31:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 495aa3e0d5a1bf2853bf010df8c3a95c SHA-1: 9199bbc4fb05e8e87dfdce3bdbbd9c4436c59acc SHA-256: 93d0f931e7c9ac957ad5e66693be8c0d4d1057c4e49c85b72d36318f92193e38
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier indicating maliciousness. The PDF contains numerous embedded URLs, many pointing to disposable hosting, suggesting a link farm designed to redirect users to potentially malicious sites. The presence of external URIs and the 'link farm' heuristic strongly indicate a phishing or malware distribution attempt.

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://jumiwimov.ru/123?utm_term=cinderella+1950+songs PDF link annotation
    • http://fitdieta.com/gps_speedometer_for_car_apprfhxp.pdfIn PDF document text
    • http://terazelidokit.22web.org/ginakadojegojazijivewo.pdfIn PDF document text
    • http://vulgargirls.fun/narcos_cartel_wars_best_sicarios4afif.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444370/normal_601d13b244a30.pdfIn PDF document text
    • http://avtoshkola-region26.ru/html_css_link_button_stylerhspl.pdfIn PDF document text
    • https://kiwewogulexir.weebly.com/uploads/1/3/4/3/134307720/midezu_virulopumexe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464541/normal_5fcf1a9b254d8.pdfIn PDF document text
    • http://xalenupom.getenjoyment.net/how_to_do_a_data_analysis_in_excel.pdfIn PDF document text
    • https://vazatevetag.weebly.com/uploads/1/3/0/8/130874289/telidofa.pdfIn PDF document text
    • http://tosefabebiribow.scienceontheweb.net/80451092113.pdfIn PDF document text
    • http://kepuxom.mypressonline.com/63915683327.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://dumakerekewefib.epizy.com/7516328484.pdfIn PDF document text
    • http://resexam.epizy.com/google_les_journaux_algeriens_en_francais_en.pdfIn PDF document text
    • https://68e1e3d4-268d-49bc-a8aa-b119cb10fea7.filesusr.com/ugd/3ceeb9_53245d4fb98c4811bfc429b6d4358937.pdf?index=trueIn PDF document text
    • https://4121a797-204a-431c-92a8-8e24072fb342.filesusr.com/ugd/b972d5_f179e3526fb845c2877e46b9adcbc742.pdf?index=trueIn PDF document text
    • http://noworevapetero.epizy.com/iso_burner_apk.pdfIn PDF document text
    • https://3e1d1bad-f645-4ebd-ac75-469e7ff7c972.filesusr.com/ugd/e745be_630ef64bb84746f18bd39904bf992476.pdf?index=trueIn 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dcae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCAE 5196 bytes
SHA-256: e182b79bdb164af52379a07b4529f3b88b96a6c463be3ea4430f3e5bfbb2a1cd
font_01_sfnt_off0000ee54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE54 10860 bytes
SHA-256: f8713786b39235e0d171a96f4f5ea699b534aba4aaa695d061dc81f9cb41f373
font_02_sfnt_off00011360.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11360 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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