Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9ad6185038104cc…

MALICIOUS

PDF

76.0 KB Created: 2021-03-19 12:22:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: e65d6ab2766f9aa445b38eb3f55ec1c6 SHA-1: 19b4191e3f69a2e0c69fef44ce41915173f13ea9 SHA-256: a9ad6185038104ccf349c904e4316d1ee7993a1497af41fc1d12aeb880243d13
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 0.9993

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
  • 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://fokemale.ru/wix?keyword=a+beautiful+mind+video+questions+answers PDF link annotation
    • http://barashik.space/film_korea_after_love_2016ccf6t.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408721/normal_60501d4bb592e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378607/normal_5ffc6f3b2818c.pdfIn PDF document text
    • http://helpcreditscore.info/hp_12c_calculator_battery9y0ex.pdfIn PDF document text
    • http://idealicaitalia-official.site/xerosovan44.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450160/normal_60399de3011fe.pdfIn PDF document text
    • http://kinorio5.xyz/saloxelonelmj4p.pdfIn PDF document text
    • http://strahuemsya.info/blue_chunky_heel_platform_pumpssj8ix.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://e97408dc-4b05-4e3b-9f19-f4127feb49ef.filesusr.com/ugd/a42eed_7852654b3dcb480488639edd44f5d6c4.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/memobofilenabon/74485243177.pdfIn PDF document text
    • https://s3.amazonaws.com/vuxirefare/walgreens_wrist_blood_pressure_monitor_e3.pdfIn PDF document text
    • https://s3.amazonaws.com/tutasujal/latest_android_mobiles_below_20000.pdfIn PDF document text
    • https://s3.amazonaws.com/lekizopiloref/zoom_modem_5352_factory_reset.pdfIn PDF document text
    • https://4ad55601-b8ab-4ae0-bc0e-e90069072326.filesusr.com/ugd/3aca14_43ec6d7c02ea474aa0bd6b22a8f9498d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/liluvad/crash_course_world_history_38_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/lososimap/call_forwarding_android_samsung_s8.pdfIn PDF document text
    • https://s3.amazonaws.com/woneketelak/sleep_apnea_test.pdfIn PDF document text
    • https://s3.amazonaws.com/gateme/73419094551.pdfIn PDF document text
    • https://s3.amazonaws.com/lomiwexuva/8002525679.pdfIn PDF document text
    • https://s3.amazonaws.com/wokesabisevo/lakulujezosesutixupox.pdfIn PDF document text
    • https://s3.amazonaws.com/dugibabafod/rinobobulim.pdfIn PDF document text
    • https://abc5f1b3-ad37-4660-b048-d9bff2240d70.filesusr.com/ugd/a1fb68_fe326d33b2244fdaa2e9187661a0dc1c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zemunomipazikez/ct_state_child_support_guidelines.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_off0000eace.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEACE 5460 bytes
SHA-256: 2921b898d1c9d936c5d8f89fd12b467fad74c2ac4afd7a559cd601f706d49db6
font_01_sfnt_off0000fd5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD5F 10900 bytes
SHA-256: edae04f470db4843e448013d9b6d6a760c530426213cc9d78137c2c7b4280aab

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