Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6acb61a3077b917…

MALICIOUS

PDF

76.3 KB Created: 2021-03-24 00:37:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: d9d4a47aad97bef661676cb4be9dd0a8 SHA-1: c2e681bfa3d25cf668ee72686b1f9530e9aaaf7a SHA-256: e6acb61a3077b9174a30ba732f7b10ded549418b5e25214da21940bc5d916b4f
156 Risk Score

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 0.9956

Heuristics 5

  • 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 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://kuzutuzo.ru/wix?keyword=voltron+legendary+defender+guide+book PDF link annotation
    • https://cdn.sqhk.co/wusezofetib/qwigTmJ/xigegido.pdfIn PDF document text
    • http://bonifacy.site/82597615248iuxoz.pdfIn PDF document text
    • https://cdn.sqhk.co/wevemugas/JZihagg/navifegarijeti.pdfIn PDF document text
    • https://cdn.sqhk.co/bevoroxur/LieLxDj/paranormal_files_fellow_traveler_hidden_objects.pdfIn PDF document text
    • http://morj.space/citas_apa_6ta_edicion4yvgj.pdfIn PDF document text
    • http://vorgazme.com/how_to_turn_on_coleman_saluspakok8s.pdfIn PDF document text
    • http://fitdieta.com/volkswagen_eos_owners_manual5kcfi.pdfIn PDF document text
    • https://cdn.sqhk.co/vavuvalegel/chfDthf/jopigibuvitesufor.pdfIn PDF document text
    • https://cdn.sqhk.co/gulizate/4gmhjih/7009536763.pdfIn PDF document text
    • https://cdn.sqhk.co/rikopekela/gdnQgRX/20634045645.pdfIn PDF document text
    • https://cdn.sqhk.co/jibenapola/CobgifI/draw_me_like_a_french_girl.pdfIn PDF document text
    • https://cdn.sqhk.co/letarezetap/BgfBgji/jidetur.pdfIn PDF document text
    • https://cdn.sqhk.co/fikubife/a5PSwwk/binag.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/fipijife/78879200314.pdfIn PDF document text
    • https://dda5c79a-a75d-44d9-a006-48dec3bfe172.filesusr.com/ugd/115d6e_3a9bb89c88da44c4aac095a80ad3521f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pewebopufupe/kowotepomuxe.pdfIn PDF document text
    • https://47ab6ce1-aee6-4086-a8e7-31fe393d2411.filesusr.com/ugd/afbef4_fea6a65f12fe4d2fa65111df87824679.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/topipovikapari/89421247776.pdfIn PDF document text
    • https://c2093f15-f4fb-4bda-9582-db5404103fa6.filesusr.com/ugd/b28561_61853a0699be4ae7a97b36c046bafb1b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lanubili/wixonedas.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxulikiwab/xenipuxetodedizoligada.pdfIn PDF document text
    • https://s3.amazonaws.com/xupimaral/99292318854.pdfIn PDF document text
    • https://s3.amazonaws.com/ragejufa/igcse_maths_past_papers_2017_answers.pdfIn PDF document text
    • https://abee6ad4-cf47-459a-954e-22b9b9bb30ad.filesusr.com/ugd/4bdc6d_ab08c9dfbd7e4ac69c000c473b7f0f28.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/ninasivol/12362837970.pdfIn PDF document text
    • https://s3.amazonaws.com/toliwudalamem/jozuzimifexi.pdfIn PDF document text
    • https://s3.amazonaws.com/xugigabitulu/samsung_gt_p5113_charging_problems.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_off0000e948.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE948 5168 bytes
SHA-256: 0489cd0a45e854fc7079ad11a9d1141ce965ce62774ef2f10bc2828a39644388
font_01_sfnt_off0000fafd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAFD 11464 bytes
SHA-256: dbbf8c73cc10b22ac839fb169f7a9cc27c7abf3ed962c0f97ac41f38ba1e246c

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