Malicious PDF — malware analysis report

Static analysis result for SHA-256 b478f9fc3c05800a…

MALICIOUS

PDF

80.6 KB Created: 2021-03-04 23:33:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: dd6c5c8e96feeb9120caa65142d1c7eb SHA-1: 9e506820adb551da9ce05af27455b7348964969e SHA-256: b478f9fc3c05800a323f347db9b3409d2628359fd41c6bd37f0f31ad43457f40
104 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 presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/123?utm_term=dying+to+be+me+reviews PDF link annotation
    • http://pisodaseveporow.22web.org/42972711372.pdfIn PDF document text
    • https://cdn.sqhk.co/puranajav/21Uijhj/moviestarplanet_2_unblocked.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483864/normal_603ea38428749.pdfIn PDF document text
    • http://venubur.22web.org/way_of_the_wolf_gear_ac_valhalla.pdfIn PDF document text
    • https://cdn.sqhk.co/farafakilof/jfhjhdP/fafafatm_gold_casino_free_slot_machines.pdfIn PDF document text
    • https://cdn.sqhk.co/lisakopew/jchijh8/538118895.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482853/normal_5fddb1ee0e6cd.pdfIn PDF document text
    • https://cdn.sqhk.co/vitimosugu/aXNhhgc/easy_chocolate_cake_recipe_no_oven.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/ninasivol/granite_rock_reports.pdfIn PDF document text
    • https://s3.amazonaws.com/mavixu/xawemi.pdfIn PDF document text
    • https://s3.amazonaws.com/mujesogi/virus_shawl_diagram.pdfIn PDF document text
    • https://s3.amazonaws.com/sowewazulejewi/gudizesibunawilipo.pdfIn PDF document text
    • https://s3.amazonaws.com/xelimewat/74787296411.pdfIn PDF document text
    • https://s3.amazonaws.com/wapabefizosumi/67958980168.pdfIn PDF document text
    • https://s3.amazonaws.com/veraxawewib/vehicle_sale_agreement_format_in_marathi.pdfIn PDF document text
    • https://s3.amazonaws.com/temujonuwu/how_to_explain_countable_and_uncountable_nouns.pdfIn PDF document text
    • https://s3.amazonaws.com/mejados/texoxuminokepof.pdfIn PDF document text
    • https://s3.amazonaws.com/kifutizijebuj/33930555734.pdfIn PDF document text
    • https://s3.amazonaws.com/selivuvumepaveb/wenusulenokekowininitiv.pdfIn PDF document text
    • https://s3.amazonaws.com/neporezofov/busiziwunutego.pdfIn PDF document text
    • https://s3.amazonaws.com/popisiburewixuj/fasekoramajo.pdfIn PDF document text
    • https://s3.amazonaws.com/kitakilesa/99590717168.pdfIn PDF document text
    • https://s3.amazonaws.com/napejaxosinages/21544577798.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_off0000ff63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF63 5156 bytes
SHA-256: cf7f10f8e987a63658b5feff78965fd7aa8467065829a2bc938cd8ca5ab7785e
font_01_sfnt_off000110fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110FD 10644 bytes
SHA-256: 156f347d840361ee5dafdffb57aace42f7b47868cb1bbfd86a1c2cb4592d05a5

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