Malicious PDF — malware analysis report

Static analysis result for SHA-256 5da9d38add41ebe6…

MALICIOUS

PDF

76.3 KB Created: 2021-03-17 02:15:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: acc9792af8d3745aa4d24f8f16e8c606 SHA-1: b0b80168eae1449b2f76dc4b971398b5f090286f SHA-256: 5da9d38add41ebe6dd5ed543173e9a57ed8021eee67a902dacef49801ff3df78
186 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by multiple heuristics and a machine learning classifier, indicating a phishing or trojan-like nature. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or SEO manipulation tactic. The presence of embedded URLs and the overall structure point towards an attempt to redirect users to potentially malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://zajinet.ru/wix?keyword=demon+eye+terraria+fish PDF link annotation
    • http://tuwedoviwe.iblogger.org/85423130612.pdfIn PDF document text
    • https://cdn.sqhk.co/dibirolinu/elffigc/27189695107.pdfIn PDF document text
    • https://xigeworimejol.weebly.com/uploads/1/3/1/4/131483719/dazusi.pdfIn PDF document text
    • http://tevalevas.22web.org/powedaliv.pdfIn PDF document text
    • https://cdn.sqhk.co/jejekije/HzjaYUc/gigaparsec_to_light_years.pdfIn PDF document text
    • http://zipogagu.iblogger.org/befoxegozufuxuvixavefosa.pdfIn PDF document text
    • https://modotetizifoxi.weebly.com/uploads/1/3/1/6/131637555/3530ea93.pdfIn PDF document text
    • https://cdn.sqhk.co/riwaxagi/GThg8hi/78120177289.pdfIn PDF document text
    • https://zideloxilatomi.weebly.com/uploads/1/3/5/3/135325243/890218.pdfIn PDF document text
    • https://cdn.sqhk.co/modesinilofe/fhdhjhj/marvel_xbox_one_games_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/xodakebebit/c08haNK/22561012756.pdfIn PDF document text
    • http://zusozovi.22web.org/budgeting_loan_application_form.pdfIn PDF document text
    • https://cdn.sqhk.co/tasewapimol/evgjYgj/zexatimumemutemajiv.pdfIn PDF document text
    • https://cdn.sqhk.co/pisapaxosabo/becCR6z/64183737902.pdfIn PDF document text
    • http://komunomaled.iblogger.org/64800966483.pdfIn PDF document text
    • https://cdn.sqhk.co/pelonulu/ieEhhb4/51237474624.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tawatibajat.rf.gd/makokesoposofipujemiz.pdfIn PDF document text
    • http://putazosaw.epizy.com/vmware_client_integration_plugin_6._0.pdfIn PDF document text
    • http://woxutonugosafer.epizy.com/bullett_raja_movie_300mb.pdfIn PDF document text
    • http://dejotiwamur.epizy.com/35848416609.pdfIn PDF document text
    • http://rexawisoza.epizy.com/android_camera_eye_tracking.pdfIn PDF document text
    • http://vitafunajubala.rf.gd/mabaposinuk.pdfIn PDF document text
    • http://wotisonuli.epizy.com/fusekesovimajanulebediza.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_off0000ee0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE0E 5076 bytes
SHA-256: d11b28970521f154a570e1f09dc79e121b6c92a85578b2a81cfd9760fb49f37b
font_01_sfnt_off0000ff36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF36 10412 bytes
SHA-256: 0c0455c8c5d6823dd55c7f1218081be9349bf6d5a369fca4b24501e24ba4cc1b

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