Malicious PDF — malware analysis report

Static analysis result for SHA-256 010fd1f42f346715…

MALICIOUS

PDF

84.6 KB Created: 2021-03-23 02:09:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 0fe06db7dff8f67637a947de2c1c6b33 SHA-1: 286f8e4bdf9db5ca5e9f8c9cb7a991794353840d SHA-256: 010fd1f42f346715cf18d76fcd8c10c71dd7bee86aef891e6119fae2d1aacda4
186 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many hosted on disposable domains, suggesting a link farm designed to redirect users. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware delivery. The embedded URL `https://jottigo.ru/strik?utm_term=alexander+the+great+story+about+his+death` is a primary indicator of the redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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=alexander+the+great+story+about+his+death PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4376096/normal_60065f198df9a.pdfIn PDF document text
    • http://migriruy.ru/puwufirobunazutipimikaxkgwlw.pdfIn PDF document text
    • http://zajiledafalam.getenjoyment.net/spanning_tree_protocol_configuration.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369788/normal_602d4ba2af258.pdfIn PDF document text
    • http://lifegirls.site/wonder_bethel_musicbv66g.pdfIn PDF document text
    • https://jafedemigizol.weebly.com/uploads/1/3/4/5/134588438/majotola.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386074/normal_5fe52f92567cd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402244/normal_604d2a5675647.pdfIn PDF document text
    • http://bachanalytics.com/bodejugubigepakubs6mmi.pdfIn PDF document text
    • https://nobawevedidilut.weebly.com/uploads/1/3/1/3/131379382/renevi.pdfIn PDF document text
    • http://fekevopimibun.sportsontheweb.net/marieb_anatomy_and_physiology_10th_edition.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4505102/normal_6054692ca4ea3.pdfIn PDF document text
    • http://setlyb.online/55400287393bar97.pdfIn PDF document text
    • http://roskycnmx.com/77111217392v48et.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zubeleboju.epizy.com/93510741976.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cfaf6644-9338-46fd-ba26-080ce9dfa121/proform_le_tour_de_france_exercise_bike_reviews.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5021203c-e5f5-4125-9799-ddfa3e498414/35177026887.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/764cdcb6-7a31-4528-a35b-f6454d1fa5e2/kivufawoxidupazawemawexo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2e5211b-18c8-47a6-82b7-187197438921/nordictrack_c990_maintenance.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/784091a6-5da9-4b71-898a-7255358aa8f0/76998084001.pdfIn PDF document text
    • http://zuzimadatunukag.rf.gd/bhagavad_gita_chapter_2_chinmaya_mission.pdfIn PDF document text
    • http://sonarubitexo.atwebpages.com/pifuzovimof.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_off00010c2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C2D 5388 bytes
SHA-256: 955f187471f59f5badf5be52a6069c8740367c9764a423493f5efcd44d22ae91
font_01_sfnt_off00011e82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E82 11656 bytes
SHA-256: 076fc047a4a3063468fa41278fdb82cbce80790fbe9ea5aaf1d48b7f35389376