Malicious PDF — malware analysis report

Static analysis result for SHA-256 8069b180ab5329e1…

MALICIOUS

PDF

89.6 KB Created: 2021-09-02 05:50:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 302f5de9bf3eb327d167be82b13542c8 SHA-1: 1098797023c652c619a12cbb766cce7156cddd22 SHA-256: 8069b180ab5329e183411541c8d36a1e24fb210c1980492fe28fe4f18066ed04
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous embedded URLs pointing to various domains, including those identified as compromised CMS uploads and disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware delivery. The presence of multiple external links suggests an attempt to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://pixomot.ru/uplcv?utm_term=what+day+was+jesus+born+in+the+bible
    • http://techbis.pl/files/file/nizifamemavevafo.pdf
    • https://bdsvieclam.com/upload/files/xareratil.pdf
    • https://www.bbmnetlicitacoes.com.br/cms/ckfinder/upload/files/72486140841.pdf
    • http://bjoybrands.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607cc00ef4157---numefasesawumogutu.pdf
    • http://videoacceso.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610c3c229c87b---bixetovixidimofatovofuji.pdf
    • http://dokumsuzgec.com/userfiles/files/22399752766.pdf
    • http://cayxaotamphan.net/userfiles/image/file/kamozogoro.pdf
    • http://demkapi.com/resimler/files/34944078639.pdf
    • https://3dreamstudios.com/wp-content/plugins/super-forms/uploads/php/files/5cf80f009305dcf507b715b444539501/wokomixoribivop.pdf
    • http://ibb-online.ru/f/file/dibiwaxuxazixawuvilegiden.pdf
    • http://chicagohalo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fa36aaa2d4---jipinumewotavuf.pdf
    • http://abcbyspu.net/ckfinder/images_store/files/xesodo.pdf
    • https://fullhousetourism.com/UploadFiles/file/20210726060101189.pdf
    • http://www.supercarrentalsofmiami.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7a2a5d16c0---74909448296.pdf
    • http://rajskiewakacje.pl/userfiles/file/jakom.pdf
    • http://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/d6c2329024880f2a746c348bdc208361/tarewukotabotubot.pdf
    • http://jessicarossitto.com/clients/7/7c/7c16b8c799dae9ffcd1258f31d6ff645/File/tedoferomovo.pdf
    • http://4998horo.gmmwireless.com/contents/files/dabazeji.pdf
    • https://www.birdandwildlifeteam.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ba1a07eed4b---59787493427.pdf
    • http://resetimpianti.it/reset/public/file/90909019967.pdf
    • https://lisacutler.com/wp-content/plugins/formcraft/file-upload/server/content/files/160761f562ff39---91883287994.pdf
    • http://zzzwchem.com/upload/files/medepabijoperilubuz.pdf
    • https://samngaimarble.com/html_upload/file/36319107610.pdf
    • http://iphysiology.ru/upload/samusolu.pdf
    • http://ctyrkolky-gamax.cz/data/dokumenty/50429168213.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef1e.bin
36df62b49d1e8a6161ee9d33de129d6d1b321735ef361c2c4ceea104ba9fb451
pdf-font-stream PDF embedded font (sfnt) at offset 0xEF1E 21428 bytes
font_01_sfnt_off000126ce.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x126CE 16792 bytes
font_02_sfnt_off00013ee5.bin
ae6d6e565d4957916d6581ff2459cce00dcb4f3445b59cc79879174b90c2d2b3
pdf-font-stream PDF embedded font (sfnt) at offset 0x13EE5 10908 bytes