Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ed84838b1f3fab3…

MALICIOUS

PDF

78.1 KB Created: 2021-04-11 11:49:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: b7763bd2e4aee7168fc034729929e823 SHA-1: 24f5fcdad921aaa1b510ccb8ca67bae8c43f63de SHA-256: 8ed84838b1f3fab3de525cf9e13c588d380566a9f408c112ff83726c3060a70c
126 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, including one that appears to be a phishing lure related to a Logitech keyboard issue. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. While no scripts were directly extracted, the PDF structure and embedded URIs suggest it's designed to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://zajinet.ru/strik?utm_term=why+won%2527t+my+logitech+ipad+keyboard+work PDF link annotation
    • http://wigobike.sportsontheweb.net/farerawa.pdfIn PDF document text
    • https://cdn.sqhk.co/lojibuwe/MPheuea/neighbors_2_sorority_rising_full_movie.pdfIn PDF document text
    • http://kadaxejob.mypressonline.com/national_sales_manager_job_description.pdfIn PDF document text
    • http://surupumigo.mypressonline.com/78623099033.pdfIn PDF document text
    • http://wivaserana.mywebcommunity.org/work_absenteeism.pdfIn PDF document text
    • http://nopuvobetag.mygamesonline.org/cancer_immunology_book.pdfIn PDF document text
    • http://tevituvodejifep.mywebcommunity.org/8282097072.pdfIn PDF document text
    • http://fadewujetenuve.mywebcommunity.org/240852645.pdfIn PDF document text
    • https://cdn.sqhk.co/sativomofij/hb4rVYN/van_gameren_sport_tarieven.pdfIn PDF document text
    • http://dalidusiz.mywebcommunity.org/barthes_mythologies_analysis.pdfIn PDF document text
    • https://cdn.sqhk.co/xonipavu/jhwCgjY/free_hair_salon_business_plan_examples.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
    • https://6d706a39-1f93-4f1a-9423-caccf7e65e71.filesusr.com/ugd/69f91f_228e9fa219a8436395ce9955cc5ddb14.pdf?index=trueIn PDF document text
    • http://lonesopuw.onlinewebshop.net/waxifefikoxuj.pdfIn PDF document text
    • https://911f1565-2faa-4874-b261-330d521e7362.filesusr.com/ugd/f46427_8cbff6fcdc144fc1969c867ce76fd63f.pdf?index=trueIn PDF document text
    • https://5fa60de5-32ab-41ac-ba65-77330e21e623.filesusr.com/ugd/2e16aa_acd974a71fcb47d89ff169d2ca80f568.pdf?index=trueIn PDF document text
    • http://wanuzenupikow.rf.gd/met_cycle_helmet_size_guide.pdfIn PDF document text
    • https://d1159ab4-cbf5-42eb-897b-83a5e94cd7da.filesusr.com/ugd/536122_4f6f525526c74f38a008e76704fcd8a9.pdf?index=trueIn PDF document text
    • https://9e269ae7-c3cf-4b9f-bde2-1d9be064b7bf.filesusr.com/ugd/139869_6cd10ed87af449d6af3ebee6e2adf9b1.pdf?index=trueIn PDF document text
    • http://navunax.epizy.com/xaxov.pdfIn PDF document text
    • http://gemebam.rf.gd/xumefizobulezowabogamegux.pdfIn PDF document text
    • http://vapomogabu.epizy.com/what_grimm_fairy_tale_character_are_you.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

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_off0000e4eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4EB 5544 bytes
SHA-256: 51796efa30a9133549a911d860c6d263b54e3f6b1043ea2211acfaf2b077ecbd
font_01_sfnt_off0000f7a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7A9 10892 bytes
SHA-256: 38bcf6374b6b0db2265d22db8480c940d47c73e95092c4192bbf7774b496158a
font_02_sfnt_off00011cb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CB0 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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