Malicious PDF — malware analysis report

Static analysis result for SHA-256 868eb3caf7685f7f…

MALICIOUS

PDF

76.4 KB Created: 2021-02-08 17:56:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 330706c888cd076684d10fabd6c95c42 SHA-1: c866106deb25268b1ac3b6edc043c96d9db6acad SHA-256: 868eb3caf7685f7f45581098fd047a8dbf959a8e9bb0e5b925d95ddeb69a92e2
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. The document body, though heavily obfuscated, suggests a lure related to a "Ninja cooking system manual" and contains numerous embedded URLs, many hosted on disposable domains or redirectors, consistent with phishing or malware distribution. No scripts were extracted from this sample.

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 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://leonvi.ru/123?utm_term=ninja+cooking+system+manual PDF link annotation
    • http://good-production20.site/absalom_and_achitophel_as_a_politicahg30w.pdfIn PDF document text
    • https://cdn.sqhk.co/lakekomum/ieJYVif/tags_to_get_likes_on_tiktok.pdfIn PDF document text
    • https://cdn.sqhk.co/goluxewimabu/MHgiAgg/97314225418.pdfIn PDF document text
    • https://cdn.sqhk.co/niserutom/0gjjfkP/98200018298.pdfIn PDF document text
    • http://idealica-official.website/jubabuti881b7.pdfIn PDF document text
    • https://vakumijajuxos.weebly.com/uploads/1/3/4/4/134465568/16419.pdfIn PDF document text
    • https://laxivaxof.weebly.com/uploads/1/3/0/8/130874385/kovinuxef.pdfIn PDF document text
    • http://silkhfig.bid/jitiwibonubttv.pdfIn PDF document text
    • http://deflecfcvy.best/42837156637prvt9.pdfIn PDF document text
    • https://pinozawekik.weebly.com/uploads/1/3/4/5/134589254/fejafar.pdfIn PDF document text
    • http://infonewstravel.com/zaz_animation_pack_8._0ddsb2.pdfIn PDF document text
    • http://slmit.fun/32123924033svt0l.pdfIn PDF document text
    • http://lazadacostumercenter.com/415193120875syc8.pdfIn PDF document text
    • https://watogovujun.weebly.com/uploads/1/3/4/6/134626060/2316406.pdfIn PDF document text
    • http://it50discount.pro/23636380493eytg2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pegolika.rf.gd/cvs_specialty_pharmacy_fax_form.pdfIn PDF document text
    • http://bobasenifaj.epizy.com/63653185434.pdfIn PDF document text
    • http://nomekerileme.epizy.com/white_platform_sneakers_2019.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eea8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEA8 5232 bytes
SHA-256: 7b4bff26eae5ae8e6debe58318b3d86c080f5a7d718aadad745237d772e8b7ee
font_01_sfnt_off00010083.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10083 10688 bytes
SHA-256: cb67a93d4a63fee8a41b800e1100e408890d0b81f05df3b7e54f53faa4f41b22

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