Malicious PDF — malware analysis report

Static analysis result for SHA-256 96a87881bb51b20e…

MALICIOUS

PDF

83.7 KB Created: 2021-03-20 13:51:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 76d9125492d1a3b1890c5a4e1ddbb7af SHA-1: e82be7c68625c82865c53546c55c4b1aa1bc91da SHA-256: 96a87881bb51b20e23fc5c5cde279357c972ede6e2fba908b83721f3ca97f2ef
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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 0.9996

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/wix?keyword=apk+oyun+indir+club+clash+royale PDF link annotation
    • https://pagafika.weebly.com/uploads/1/3/5/3/135339488/seleloma_xukarexogotip_panunerar.pdfIn PDF document text
    • http://jebebixazonutug.mypressonline.com/best_ereader_for_and_epub.pdfIn PDF document text
    • http://nexofozupugasi.mywebcommunity.org/fikufarubuvatejire.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425760/normal_5fcd653f47ad1.pdfIn PDF document text
    • https://mokefogo.weebly.com/uploads/1/3/6/0/136086775/gikog-bobov-kafubiwitebu-lagusawiz.pdfIn PDF document text
    • http://lakujalinifibo.mypressonline.com/calvary_temple_songs.pdfIn PDF document text
    • https://ragusixiseditof.weebly.com/uploads/1/3/0/8/130814169/donexipapa.pdfIn PDF document text
    • http://mifirejetevina.getenjoyment.net/44326590254.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406473/normal_5fc8995141b46.pdfIn PDF document text
    • http://nusezuretoti.scienceontheweb.net/butterfly_life_cycle_lesson_plan.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://s3.amazonaws.com/xamibebulosaxug/wisejelemeradeja.pdfIn PDF document text
    • https://s3.amazonaws.com/tidigudetefumof/how_to_do_self_portrait_photography.pdfIn PDF document text
    • https://s3.amazonaws.com/pazerogasarinu/weather_report_pune_city.pdfIn PDF document text
    • https://s3.amazonaws.com/pizexopenaxu/68474380168.pdfIn PDF document text
    • https://s3.amazonaws.com/gasodamuza/arc_length_practice_problems_worksheet.pdfIn PDF document text
    • http://luvepel.myartsonline.com/aneurisma_aorta_adalah.pdfIn PDF document text
    • https://s3.amazonaws.com/bomupi/what_to_do_when_your_motorola_phone_wont_turn_on.pdfIn PDF document text
    • https://s3.amazonaws.com/bejideba/what_is_formative_assessments_in_education.pdfIn PDF document text
    • http://gagugitebuf.atwebpages.com/barron_s_essential_words_for_ielts_3rd_edition.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000de0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE0F 5256 bytes
SHA-256: 3f033b933650d36ce74e1e82a47f26205964222d62df036c63ce16198745ae0e
font_01_sfnt_off0000efd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFD2 11768 bytes
SHA-256: dac6ba99cca9903da0ca92786129aa553a32c367c2c4e623cb8706da865e6cab
font_02_sfnt_off00011456.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11456 18520 bytes
SHA-256: af0570064f3490c99db8ef7c2567ffe9bd36400ff587917a03ccac0f178982c1
font_03_sfnt_off00013154.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13154 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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