Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2aeb9ba611ced8c…

MALICIOUS

PDF

83.7 KB Created: 2021-02-04 06:39:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 93d7ab4a3d7caeb7d409fae2bb8f509d SHA-1: 90b5852ea2dce563820825b706de93186cdb8f2d SHA-256: a2aeb9ba611ced8c7bbd65f9dd4c14735fc2582b5b7d8a631bc5f7feb35c7ace
166 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics, including ML classification and ClamAV, indicating malicious intent. The 'SE_CLICKFIX' heuristic suggests the document attempts to trick the user into executing a command, likely to download and run a secondary payload from one of the embedded URLs. The presence of numerous links to disposable domains further supports a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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://maypoin.ru/aws?utm_term=windows+10+update+ing+0 PDF link annotation
    • http://filuniguwol.22web.org/dedokaxopoxip.pdfIn PDF document text
    • https://cdn.sqhk.co/navimoxa/hbjdhbL/58796543752.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470401/normal_5fe787a186a1a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369506/normal_60126a199763a.pdfIn PDF document text
    • https://cdn.sqhk.co/gobuwovuv/jbibzij/38158211917.pdfIn PDF document text
    • http://mklhhhh.space/58517215985wuxxi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384821/normal_5fe5577dc8cce.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480399/normal_5ffe28499cc0b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481056/normal_601b467eac0c3.pdfIn PDF document text
    • http://varietystore.website/10998005148rfmgy.pdfIn PDF document text
    • https://cdn.sqhk.co/pibegufuxova/hbNiagf/roadside_attractions_map_idaho.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405413/normal_5fd60c0043b00.pdfIn PDF document text
    • http://datinge.site/scenario_lyrics_tribe0agi9.pdfIn PDF document text
    • https://cdn.sqhk.co/rapurakoke/Djajiia/nurelirerunavuzoruxewa.pdfIn PDF document text
    • http://stav-games.ru/physical_geology_plummer_15th_edition0o7bp.pdfIn PDF document text
    • https://cdn.sqhk.co/lasesekov/cgc4Gjf/new_outbreak_perfected_ornament.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383340/normal_6018868456f22.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/pomaxa/zibogazamavakowe.pdfIn PDF document text
    • https://s3.amazonaws.com/medaliwifufugel/94673492343.pdfIn PDF document text
    • https://s3.amazonaws.com/fizaxo/lajevalulabunivovuluv.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://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fc9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC9E 5300 bytes
SHA-256: f2d7d13e63b8424d927e0f0d30557186ec81a63a7d651f2c005bccbae508aff9
font_01_sfnt_off00010ed6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10ED6 3720 bytes
SHA-256: d5ecec3e822993868ba70e247019bcdb656a9fee58d620eb93bc70658e929280
font_02_sfnt_off00011a39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A39 11492 bytes
SHA-256: a97d3163c9ceab15e3bcadc7be71134b8a76f456e547de9b7866c6e708993ad9

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