Malicious PDF — malware analysis report

Static analysis result for SHA-256 05200114d1fb4752…

MALICIOUS

PDF

76.3 KB Created: 2021-03-10 19:11:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 0079a66846d7ecd15952872a2310edf2 SHA-1: 4f49446fd9012437a54b301c81c5e2b0cf4d9307 SHA-256: 05200114d1fb4752f2bd732c32f28603c32c3f4a0f422f6f62dfea2bef1829ba
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains a significant number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to potentially harmful content. The presence of URLs like 'https://ponafet.ru/strik?utm_term=salario+minimo+en+puerto+rico+2019' and numerous links on 'cdn.sqhk.co' points towards a phishing or malware distribution scheme.

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://ponafet.ru/strik?utm_term=salario+minimo+en+puerto+rico+2019 PDF link annotation
    • https://cdn.sqhk.co/nifodotiriru/bhfihgh/download_warriors_of_the_universe_online_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/putuziboki/quhbNLp/truck_racer_driving_2020_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/fonowatusopu/idp6Mig/agonistas_alfa_1.pdfIn PDF document text
    • http://itgermany.net/wishlist_download_wish_listhhnym.pdfIn PDF document text
    • http://hookup681.site/47984337974b98p2.pdfIn PDF document text
    • https://cdn.sqhk.co/ganuniwiku/fxFEijp/men_s_world_cup_2026_tickets.pdfIn PDF document text
    • http://basiditdcf.space/relion_30g_ultra_thin_lancets_200-cto10s6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://d8d691c7-cf48-432b-bece-a54604b57851.filesusr.com/ugd/1e3a4b_8a421fdf52dc4a55937690eda8e56afc.pdf?index=trueIn PDF document text
    • https://51f47fa2-20f7-4ec4-bb91-8ae4aee689b4.filesusr.com/ugd/917232_346505de518a456289d1b199a2dafe21.pdf?index=trueIn PDF document text
    • https://ffb80149-315c-4936-8637-e87477b606fc.filesusr.com/ugd/e7410d_32491a11ba58403da1f785efb6e7bd90.pdf?index=trueIn PDF document text
    • https://37523d11-79cf-4eb3-ada4-f05de57c71ee.filesusr.com/ugd/275374_d4d130caa7c3483f8aa42ffdb221674f.pdf?index=trueIn PDF document text
    • https://73e25548-3913-4bbb-aa69-a1b25f69568d.filesusr.com/ugd/cece23_2b86f5488503425f99aeb7d4845fa9c1.pdf?index=trueIn PDF document text
    • https://23da7c74-6e14-424a-b22a-901aa35eafb1.filesusr.com/ugd/9cc572_e7715a28296f4f538dd818c135c02e40.pdf?index=trueIn PDF document text
    • https://e791dc30-71fd-4519-a75e-453748eb9c32.filesusr.com/ugd/8a5fcf_2247239ad6ae41ed8257f48f203f28c1.pdf?index=trueIn PDF document text
    • https://f84ffea9-2755-49c2-9cb5-47ca8b55fe65.filesusr.com/ugd/0adedf_c16fac101eda484e8e5d34744cf1f4c5.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/1aaca944-58bc-454d-ba0e-54b09dec531d/what_is_ethical_problem_solving.pdfIn PDF document text
    • https://d5fb4b5d-766d-4e54-ab1c-ecc61d2b7d82.filesusr.com/ugd/b0c8dc_7b0e8ba4409f48169e829ccdb481e94b.pdf?index=trueIn PDF document text
    • https://feedbc21-cb93-402c-9ae2-3476589645d2.filesusr.com/ugd/f3ecbe_d3cf34314d7d4a55bfa5e39e1dd89b5e.pdf?index=trueIn PDF document text
    • https://ed59cdd8-0d75-4634-8bb2-7afdb9da103e.filesusr.com/ugd/9cb112_8d60122107ef4cad91c2068b6d8f865a.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f63a52b-1f41-4291-ba01-39f4c6fba603/8487892003.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_off0000e9e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9E2 5488 bytes
SHA-256: 9b2f9c820a010de63a35b2ace8be31209732dd338facc3e2fa48c9185082c413
font_01_sfnt_off0000fc79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC79 11668 bytes
SHA-256: ef46e3953906d11247ce99a3738d3a1ceadc4bab3bfd94dfe08c093083f279d2