Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed61cda12580d88c…

MALICIOUS

PDF

82.9 KB Created: 2021-03-03 21:48:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 16aa30c2f4ad31cf08e3775e910c832e SHA-1: 976b941574a30c3d216ba4476ca8a7281e2ac529 SHA-256: ed61cda12580d88cbaed9e626aa240e0d008822fb4557fae35228a0abfb977c8
134 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 and 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 0.9998

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
  • 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.
  • 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://nipisod.ru/award?keyword=playboy+magazine+ebook+free+download PDF link annotation
    • http://helplnstagramcontact5087423.com/normal_distribution_table_percentile3bt13.pdfIn PDF document text
    • http://shoplus.info/pipegokagevipavum77x8p.pdfIn PDF document text
    • http://save50.pro/38394995760533kl.pdfIn PDF document text
    • https://cdn.sqhk.co/kigimijexap/aupYFje/voice_recorder_app_windows_10_mp3.pdfIn PDF document text
    • https://cdn.sqhk.co/gabebutiz/XpvM4ji/drill_down_report_ssrs_2016.pdfIn PDF document text
    • http://goodsun.space/shark_navigator_vacuum_filters85p5a.pdfIn PDF document text
    • https://jesisime.weebly.com/uploads/1/3/4/8/134886507/sojadimu_monupabuter_geluwax_xafamazo.pdfIn PDF document text
    • http://xtina.online/black_panther_cast_2hpvsi.pdfIn PDF document text
    • http://tendernes.ru/98011838075splam.pdfIn PDF document text
    • https://zonilalafujagep.weebly.com/uploads/1/3/4/7/134731182/265f6917240.pdfIn PDF document text
    • https://dawurawo.weebly.com/uploads/1/3/5/3/135323901/razezidipol.pdfIn PDF document text
    • https://cdn.sqhk.co/litonesi/ggcii2B/xanifudajefizinegak.pdfIn PDF document text
    • https://powifamule.weebly.com/uploads/1/3/4/7/134757347/putabuximoj_biwonoxafogivu_latal.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422893/normal_6024a007d1c14.pdfIn PDF document text
    • https://dutumeparozawa.weebly.com/uploads/1/3/1/1/131163590/1298005.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409826/normal_5fd0dfb80b709.pdfIn PDF document text
    • http://oneplusonemain.xyz/90240088092kj5re.pdfIn PDF document text
    • https://cdn.sqhk.co/lewiwifo/B9jfrha/speed_motorcycles_for_sale_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/rotelizedo/dMFhhjb/buddy_my_virtual_pet_friendship.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
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f9ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9CA 5204 bytes
SHA-256: 9e762dc75ca4302af464dd3ee19bc890f268b1aa5bf37922a6494f8fa81309d9
font_01_sfnt_off00010b76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B76 10676 bytes
SHA-256: df71b7bea7792298e4eb7f716ff17ad5e1f390ec9428c55e00530b8cc2a492ae
font_02_sfnt_off0001300e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1300E 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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