Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ae38a8ab5ec743c…

MALICIOUS

PDF

76.5 KB Created: 2021-06-11 16:56:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 2f28449998a07d5494c3ce098c0f6563 SHA-1: ce8b4dfb94bc0a420ca39cfee831e5d590c24732 SHA-256: 4ae38a8ab5ec743cc090bdba8e86548e0ccf4586fbb73cb964a26f16a7cce473
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://huntic.ru/pbw?utm_term=luka+chuppi+all+mp3+songs+download PDF link annotation
    • https://rixodinek.weebly.com/uploads/1/3/5/3/135392020/xebopojo.pdfIn PDF document text
    • https://jipaxebuperiw.weebly.com/uploads/1/3/4/7/134751602/02798099bcf32d.pdfIn PDF document text
    • https://leluwimatuw.weebly.com/uploads/1/3/0/9/130969986/9776531.pdfIn PDF document text
    • https://bisopinulur.weebly.com/uploads/1/3/4/0/134000360/6019189.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/74ce7157-f7d6-4bdc-adbb-499489a5ebff/wopabizitanozolazijijo.pdfIn PDF document text
    • http://tukosifana.pbworks.com/f/41285645203.pdfIn PDF document text
    • http://xejujaser.pbworks.com/w/file/fetch/145031211/bolidan_bangla_cinema.pdfIn PDF document text
    • http://zopilep.pbworks.com/f/goremupewoj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3a5f735-41c3-4218-9e75-a216a9eb532d/gmat_practice_test_questions_with_answers.pdfIn PDF document text
    • http://risodige.pbworks.com/w/file/fetch/144623841/measure_words_with_uncountable_nouns.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49aa79f1-a3fa-450f-a23b-a5b102364720/saab_9-5_workshop_manual.pdfIn PDF document text
    • http://bevojoluvu.pbworks.com/f/call_recording_app_for_iphone_free_download.pdfIn PDF document text
    • http://komogabovuwa.pbworks.com/w/file/fetch/144586194/can_you_get_a_fake_dna_test.pdfIn PDF document text
    • http://subazim.pbworks.com/f/31570405426.pdfIn PDF document text
    • http://mibegenav.pbworks.com/w/file/fetch/144438306/luxury_cars_of_long_island.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81999b30-d4b9-4708-8e51-a812118a275e/72951019707.pdfIn PDF document text
    • http://gufikugefisu.pbworks.com/f/how_to_drain_my_coleman_saluspa.pdfIn PDF document text
    • http://sejiliki.pbworks.com/w/file/fetch/144669150/92125553751.pdfIn PDF document text
    • http://xugatun.pbworks.com/f/bexotuzesebijowomig.pdfIn PDF document text
    • http://mapaduzipi.pbworks.com/f/watch_croods_2_online_free_in_hindi.pdfIn PDF document text
    • http://betosaxugawi.pbworks.com/f/what_does_the_bible_say_about_blindness.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_off0000eceb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECEB 5652 bytes
SHA-256: 6296599d57cee57f0e93ac117b0c417f7487273b4a9c684c8528b7e595e5777b
font_01_sfnt_off00010024.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10024 10744 bytes
SHA-256: 707e3b1d3b8ad2a375a6c372c221438f78fe1e7fa80b5a392a077af8de46d7d5

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