Malicious PDF — malware analysis report

Static analysis result for SHA-256 595ceb77b96bca39…

MALICIOUS

PDF

104.8 KB Created: 2021-03-28 23:59:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 4b922a0fb660c20827e563d7801b2eda SHA-1: b221b4f39252f85e09b059c004f78252f80de4f7 SHA-256: 595ceb77b96bca39625ed838f935a82c8936eb4c4b94ad1ddb0ebb04913a991d
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 0.9989

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://botokaw.ru/aws?utm_term=what+does+non-destructive+examination+mean PDF link annotation
    • http://revershjtb.site/101_christmas_songs_albumui9a6.pdfIn PDF document text
    • https://cdn.sqhk.co/pidodalatip/iaVFjde/71533727371.pdfIn PDF document text
    • http://pollsexpert.com/59014313191mkmu3.pdfIn PDF document text
    • http://liketime.fun/kafubodadoxorovaluki7hdwy.pdfIn PDF document text
    • https://retowukiri.weebly.com/uploads/1/3/4/5/134592720/nilogexoxix.pdfIn PDF document text
    • https://pigokujedaxe.weebly.com/uploads/1/3/0/7/130740563/lukipamefonopi.pdfIn PDF document text
    • https://suzulazupe.weebly.com/uploads/1/3/3/9/133997697/ce5a1.pdfIn PDF document text
    • http://rocketdocs.us/the_fatal_raid_2019_english_subtitlesey54a.pdfIn PDF document text
    • http://xawegap.mywebcommunity.org/1749559024.pdfIn PDF document text
    • https://tewenamizudeko.weebly.com/uploads/1/3/0/8/130873709/tigiposetomaroxulaz.pdfIn PDF document text
    • http://wipunemobak.mygamesonline.org/bachon_ki_urdu_kahaniyan.pdfIn PDF document text
    • https://ritefebeg.weebly.com/uploads/1/3/5/3/135316582/4c544344.pdfIn PDF document text
    • https://cdn.sqhk.co/letarezetap/BgfBgji/jidetur.pdfIn PDF document text
    • http://albl.ru/is_the_movie_90_minutes_in_heaven_on_netflix2e34q.pdfIn PDF document text
    • https://cdn.sqhk.co/pemejurove/jgih6Jf/honda_brio_amaze_2020_interior.pdfIn PDF document text
    • http://bamupiwabibajew.mywebcommunity.org/basic_physics_interview_questions.pdfIn PDF document text
    • http://bijopesenof.iblogger.org/pokirotokonodigitanudum.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bupebubu.epizy.com/larson_algebra_2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/96972453-6792-4941-a7f6-7f152f331c36/loser_by_jerry_spinelli_reading_level.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e06d017-5cd6-4632-8ba0-4f22a415a0e2/words_related_to_stressed_out.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a636e9aa-5376-411c-8075-f4f0362a0b9d/jude_the_obscure_movie_download.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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_off00014766.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14766 5320 bytes
SHA-256: 0e09a5d1f6cd35a55fd365a1ae8784b07f3924ff032e30ddd19c3d7a66cb561e
font_01_sfnt_off0001596c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1596C 11180 bytes
SHA-256: ae05c687b8cf2ff74428a68c14c7b68feb06ca44f2cbbc34e6016241e34ad8f7
font_02_sfnt_off00017f86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17F86 16204 bytes
SHA-256: 31aa257675234f953cb39254c73a0c002637764ec2691c470e0912636c3685cf

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