Malicious PDF — malware analysis report

Static analysis result for SHA-256 800e149a6bf9a5e3…

MALICIOUS

PDF

124.0 KB Created: 2021-03-02 08:22:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 28a09c39b70db889cff1f82aad697b08 SHA-1: af458c00c179c6ed2d69ace9ef625347c8899f90 SHA-256: 800e149a6bf9a5e3a883bf3f402ac938b665eec4a38449192dd366bec489f5a7
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to disposable hosting and link farms, a common tactic for phishing or distributing further malware. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://midufefew.ru/aws?utm_term=is+there+a+taco+bell+in+uk PDF link annotation
    • http://construt.site/discussion_questions_to_kill_a_mockingbird3wyi5.pdfIn PDF document text
    • https://cdn.sqhk.co/tasaxasup/hbgLqji/47989031931.pdfIn PDF document text
    • https://cdn.sqhk.co/xuxawexa/Mjjhdqk/21973112866.pdfIn PDF document text
    • http://politach.com/texto_o_mutiro_da_limpezacr5xa.pdfIn PDF document text
    • http://xasumemazekejo.scienceontheweb.net/casio_ga-100cm-8adr_g-shock_erkek_kol_saati.pdfIn PDF document text
    • https://cdn.sqhk.co/pitekofotada/jpib2in/pafigogodizizifoni.pdfIn PDF document text
    • https://cdn.sqhk.co/fexilejedit/lggr96D/ragdoll_cat_population_in_the_us.pdfIn PDF document text
    • https://cdn.sqhk.co/semexixok/iL5Ljga/spacex_crew_dragon_live.pdfIn PDF document text
    • https://cdn.sqhk.co/kumotuxijufu/caAciiz/adobe_photoshop_camera_raw.pdfIn PDF document text
    • https://cdn.sqhk.co/wepigosogo/iy6yhe0/marvel_legendary_secret_wars_2_card_list.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sejekaxupoze.epizy.com/free_guzheng_sheet_music.pdfIn PDF document text
    • http://xukenefurirog.epizy.com/toefl_essay_writing_topics_with_answers.pdfIn PDF document text
    • http://latujetob.epizy.com/wibonutesid.pdfIn PDF document text
    • http://kaborox.rf.gd/bitcoin_wallet_android_tutorial.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00017a01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17A01 9792 bytes
SHA-256: a7c9b1af30d5a1bd757460d37662c64893999ebf41416afe46b578a1aa7515a2
font_01_sfnt_off00019b14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19B14 5028 bytes
SHA-256: e471e06f48694325516be5e4a2c203a554c1883e6232c2646f9118cb8b7cab7f
font_02_sfnt_off0001ac1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1AC1C 2096 bytes
SHA-256: e162fea074a2bb8d09e97829efcc8e8a580b29d5aea9fadede12ddb41e9b10c8
font_03_sfnt_off0001b5b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B5B4 14300 bytes
SHA-256: 2b7e2ac2b4df33770f4cf43e26e062b912c3ec33ce8b9a8d667797ff6cb6b862

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