Malicious PDF — malware analysis report

Static analysis result for SHA-256 269f23747e136b35…

MALICIOUS

PDF

75.3 KB Created: 2021-04-04 20:10:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: e759f1ee4d567159ca07c541315506b7 SHA-1: 2588656ae9965b6cddce7889758b39aa60e2d3a8 SHA-256: 269f23747e136b35e9475c053a31f543f8c06865c67ce0c619ae311ebdd4bd51
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of numerous embedded URLs, many pointing to disposable domains and utilizing UTM parameters, strongly suggests a phishing or spam campaign designed to redirect users to potentially harmful content. The PDF structure itself appears to be a link farm, further supporting this attack pattern.

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://jacksth.ru/strik?utm_term=look+long+white+shirt+mens PDF link annotation
    • http://veletekuti.66ghz.com/the_giver_chapters_1-_5_quiz.pdfIn PDF document text
    • http://rumagadoli.22web.org/moment_js_date_format_timezone.pdfIn PDF document text
    • http://springtea.space/xudalagolusugifejavopb7gyx.pdfIn PDF document text
    • http://zarudofafibitov.mywebcommunity.org/html_to_convert_online_free.pdfIn PDF document text
    • http://tezijexipilimo.getenjoyment.net/59747696013.pdfIn PDF document text
    • http://jixelaxoli.66ghz.com/vizikodukeminerixegutab.pdfIn PDF document text
    • https://cdn.sqhk.co/sewuvavimebi/jhghb1d/arti_mimpi_buang_air_besar_berdarah.pdfIn PDF document text
    • http://mastera-saydinga.ru/manual_de_procedimientos_de_una_empresa_textilf3cx3.pdfIn PDF document text
    • http://fitokaps.xyz/anatomy_and_physiology_coloring_workbook_answer_keyi1kg3.pdfIn PDF document text
    • http://verifedform.com/fireman_sam_cartoon_freeywgs0.pdfIn PDF document text
    • http://boforobevuziko.mywebcommunity.org/lista_de_aditivos_alimentares.pdfIn PDF document text
    • http://riwalimuj.scienceontheweb.net/january_2020_calendar_download.pdfIn PDF document text
    • http://nefupanono.mygamesonline.org/7270245018.pdfIn PDF document text
    • http://doweryklkq.space/31878280128m7veo.pdfIn PDF document text
    • https://cdn.sqhk.co/xenojepezere/cigjjif/hero_factory_idle_tycoon_mod_apk.pdfIn PDF document text
    • http://rawiduti.medianewsonline.com/joduwobedezus.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://keporeninudo.rf.gd/tanominorepinapix.pdfIn PDF document text
    • http://bibibojusajol.rf.gd/xenobexitezepuxolo.pdfIn PDF document text
    • http://dojufeme.epizy.com/datifebija.pdfIn PDF document text
    • http://wifofevowogak.onlinewebshop.net/59100773510.pdfIn PDF document text
    • http://sokipev.epizy.com/folic_acid_in_pregnancy.pdfIn PDF document text
    • http://sejanaxopuvogiw.epizy.com/anime_streaming_app_android.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB08 4988 bytes
SHA-256: 7dbddbac5307a02a66ee0c6675f0b1109aa24204d15126df578c3d60284f1080
font_01_sfnt_off0000fbf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBF1 10480 bytes
SHA-256: 33491ad93f6f7766c77ef3e431918b9af6965d46bc6c6687060c97e916773e1f

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