Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b34055baf775086…

MALICIOUS

PDF

70.7 KB Created: 2021-03-09 04:45:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 53992ae223e88aeb1a54ee353c98579a SHA-1: 4d9c47988486dde7264bdc84e246e21b5ac3dcd5 SHA-256: 9b34055baf7750868a7c9c530f19544a6c3c44c3fcbcf9d125901ac91165c716
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://botokaw.ru/wix?keyword=solving+linear+equations+by+combining+like+terms+worksheet PDF link annotation
    • https://xidoteruredogon.weebly.com/uploads/1/3/1/4/131454367/soxupajus_voligegusume_rumamizo.pdfIn PDF document text
    • https://fajesafopumusid.weebly.com/uploads/1/3/1/8/131871419/441d6b8fb893b6c.pdfIn PDF document text
    • http://microdigitalmeter.xyz/how_to_use_adobe_premiere_for_beginners5uv88.pdfIn PDF document text
    • http://domsale.xyz/781528927479xisr.pdfIn PDF document text
    • http://rupazaduxil.mywebcommunity.org/fun_multiplication_worksheets_grade_4.pdfIn PDF document text
    • http://future-techno.ru/interview_questions_for_leadershiptv48c.pdfIn PDF document text
    • https://jovinafunen.weebly.com/uploads/1/3/2/6/132695325/8597632.pdfIn PDF document text
    • http://talajudoxuxip.mygamesonline.org/61917825436.pdfIn PDF document text
    • http://lessonsonline.site/number_4_worksheets_free_printableh5c70.pdfIn PDF document text
    • http://burivuvuju.medianewsonline.com/garmin_nuvi_3597lm_price.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/gezizefefififa/chameleon_bootloader_mountain_lion.pdfIn PDF document text
    • https://s3.amazonaws.com/nawuvud/8271710421.pdfIn PDF document text
    • http://birukuf.onlinewebshop.net/watch_the_white_princess_episode_7_online_free.pdfIn PDF document text
    • https://s3.amazonaws.com/gonasidupij/alpine_cde-hd149bt_price.pdfIn PDF document text
    • https://s3.amazonaws.com/levovod/wazanub.pdfIn PDF document text
    • https://s3.amazonaws.com/sugowubuf/jafepos.pdfIn PDF document text
    • https://s3.amazonaws.com/rudelazifizuvo/advantages_and_disadvantages_of_biomass_energy.pdfIn PDF document text
    • https://s3.amazonaws.com/pugomonapoxuxe/alter_ego_a2_cahier_answers.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_off0000d689.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD689 5900 bytes
SHA-256: 3ce216455acf3d6cee05fe3b9bc9a23458b49f8f3a3b1fae2945f5fabd01c2bf
font_01_sfnt_off0000ea93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA93 10148 bytes
SHA-256: 2d4d67ba82943ac8858e035c0f8a6eed9a2ad3363f30953337590d45f7830f8d

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