Malicious PDF — malware analysis report

Static analysis result for SHA-256 e33f516af5e06621…

MALICIOUS

PDF

76.5 KB Created: 2021-03-30 20:42:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: b374d3b518f8979c9045ea014e6ac0a7 SHA-1: 8bb5179003df2585d287e8111e6100fd68ed61de SHA-256: e33f516af5e0662118bf186c57876670c2f6f07474a5237d4522b5b344dea07e
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 0.9998

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://jottigo.ru/award?keyword=cations+list+pdf PDF link annotation
    • https://cdn.sqhk.co/vitimosugu/dh7Qxz2/amazon_music_download_location_ipad.pdfIn PDF document text
    • https://sabexinutix.weebly.com/uploads/1/3/0/7/130740027/511596b57e10cde.pdfIn PDF document text
    • https://jejaparax.weebly.com/uploads/1/3/5/3/135332208/9dd067588b4.pdfIn PDF document text
    • https://cdn.sqhk.co/navozaxezini/gPjfvia/21486522497.pdfIn PDF document text
    • https://nurobajaxi.weebly.com/uploads/1/3/4/5/134507542/xisub_dasapejo.pdfIn PDF document text
    • https://xinelonaveguv.weebly.com/uploads/1/3/4/6/134606197/tunukulojebi-pijozafaviduvux.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/zopenave/vijalewojanojab.pdfIn PDF document text
    • https://s3.amazonaws.com/juvuraguvutoxif/riroje.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38d88217-dbe6-43ff-8660-e3be05fd4cd2/36140789968.pdfIn PDF document text
    • https://2ffa788b-df2f-461f-b9c5-573bec542745.filesusr.com/ugd/374ce0_d6583eee2103433085181ea95b494ee4.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc07ebe0-b5e9-4844-8056-b6d1cfc0ab5a/sonic_menu_shakes_specials.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxefemebidaz/android_auto_not_working_in_car.pdfIn PDF document text
    • https://s3.amazonaws.com/veledabejufi/nikon_d5200_camera_price.pdfIn PDF document text
    • https://3c3713de-992c-4571-92b4-00afcb8cb2c1.filesusr.com/ugd/9dbdb2_6570e6e5565d40409e94de059436b063.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa2a4bf5-2389-4a19-adfb-14a27848fbab/dewalt_dws780_miter_saw.pdfIn PDF document text
    • https://s3.amazonaws.com/jonora/zaninovufirozitiso.pdfIn PDF document text
    • https://s3.amazonaws.com/kefodek/flyer_design_templates_for_food.pdfIn PDF document text
    • https://s3.amazonaws.com/vuzufexarevima/rasesawonefobudapuzolurex.pdfIn PDF document text
    • https://4541bc1c-e35c-4de3-bb44-1f53c3e1a56d.filesusr.com/ugd/68f66e_87efeb222ccc4f319004d239e7650e6a.pdf?index=trueIn 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_off0000eef3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEF3 4844 bytes
SHA-256: 7db549cd8f06b90890dee6344b2b23ce4755ddf478e3a3bbbf6047415c01c10e
font_01_sfnt_off0000ff80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF80 10708 bytes
SHA-256: 99bb08aff34fc4e00ac063b4c62c9c24d63172d7c860a0571987d917b42667e8

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