Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ec894904c70a786…

MALICIOUS

PDF

82.3 KB Created: 2021-09-06 20:27:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 1a0b677af76f09e21b0c4ab15b184499 SHA-1: d9ddb430cdd1eceb09ec3ab41f2cdd7bd065d6b3 SHA-256: 1ec894904c70a78603c9744554424b338494de240eefd6076f3ab481566b13e6
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF contains embedded JavaScript and numerous URLs, many of which are part of a link farm hosted on compromised or disposable domains. The embedded JavaScript likely facilitates the redirection to these malicious sites, which are designed to deceive users. The ClamAV detection and ML classifier strongly indicate malicious intent, consistent with phishing or SEO poisoning tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://archism.ru/uplcv?utm_term=plantronics+backbeat+go+2+instruction+manual PDF link annotation
    • http://apluskleaning.com/admin/images/file/rinutuxu.pdfIn PDF document text
    • http://lifemartrealestateconnect.com/wp-content/plugins/super-forms/uploads/php/files/f4ntudgg6nnpf6dfv0b99e8463/28285510423.pdfIn PDF document text
    • http://manpukulivermore.com/uploads/files/sisipakaromagibuladeg.pdfIn PDF document text
    • http://monktonlionsclubkidscamp.com/clients/9/99/99b8b5517e5fb663501b7ee5137ebf55/File/rebujojajufopisoxon.pdfIn PDF document text
    • http://thetachikappasigmaalumni.org/clients/5/56/56ac51e2ee760b54d3ff8b7d53c877b7/File/vivixajujuwo.pdfIn PDF document text
    • http://catgarner.com/clients/873270/File/26780494222.pdfIn PDF document text
    • http://info56.ru/userfiles/file/kakazurabuma.pdfIn PDF document text
    • http://www.jamesbgriffinlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cb3b6933016---wufezetopeneles.pdfIn PDF document text
    • https://plumcourse.com/wp-content/plugins/super-forms/uploads/php/files/64517184200cc4f2a202563c484ea190/20964619066.pdfIn PDF document text
    • https://bestofbucerias.com/upload/file/dekaxapuxe.pdfIn PDF document text
    • https://movesforfree.com/wp-content/plugins/super-forms/uploads/php/files/i6vmtjihegqbhnvieauvtdrjl3/kafedewijanoxutekoduta.pdfIn PDF document text
    • http://randygordonlawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/siwibujusubomasuj.pdfIn PDF document text
    • https://tehnol.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160b852340ca31---79669059541.pdfIn PDF document text
    • https://onlinendttraining.com/files/98726743557.pdfIn PDF document text
    • https://onelineservice.it/file/pizojofemezawi.pdfIn PDF document text
    • http://sergey-yushkov.com/pict/file/zemefoxirabob.pdfIn PDF document text
    • http://abwingssuffolk2.com/uploads/files/33061678861.pdfIn PDF document text
    • http://cameronhaddock.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606efb7e6e726---wigorisasofitakodaw.pdfIn PDF document text
    • http://w-f-l.de/user_img/file/jitamajon.pdfIn PDF document text
    • http://sl-light.ru/design/img/upload/file/gekokirowot.pdfIn PDF document text
    • https://www.kngroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080eb9a6e072---81692860134.pdfIn PDF document text
    • http://xn--80akij1ajew.xn--p1ai/wp-content/plugins/formcraft/file-upload/server/content/files/160acc689bc155---zefanemapetugoxoru.pdfIn PDF document text
    • http://sasmedm.com/www/js/ckfinder/userfiles/files/vesijidope.pdfIn PDF document text
    • http://epoptavky.com/is/images/FCKeditor/File/9300341676.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dc1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC1A 11024 bytes
SHA-256: d97fa4b450b2392ec189e1e01c5f17426fbc1b9a3378444f511af7e988df46bf
font_01_sfnt_off0000f5d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5D3 17608 bytes
SHA-256: c6e1bc50c0eda35a4a2619b2279a6e51a1452e76c754ca870bf66d243fb47608
font_02_sfnt_off00012346.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12346 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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