Malicious PDF — malware analysis report

Static analysis result for SHA-256 93e6974884dc2f3f…

MALICIOUS

PDF

84.5 KB Created: 2021-09-01 10:08:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: f74a7de448257a2709220909144b0aa3 SHA-1: 9bcbab91cbca3c1bd335d4d376f1b2e98c65268d SHA-256: 93e6974884dc2f3f83c0c296a5ef5b7a6e4c53d1c560db9dd09dfdb4cff3864c
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of these links indicates an attempt to lure users to external sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://dineflon.com//files/81767716978.pdf In PDF document text
    • https://micast.de/wp-content/plugins/super-forms/uploads/php/files/bgvk774jt1vime21i7d3ule74r/zaxegolibavalitosiv.pdfIn PDF document text
    • http://hotelamadeustorino.com/userfiles/files/mogipepulubepi.pdfIn PDF document text
    • http://websurin.net/UserFiles/File/siwopediseko.pdfIn PDF document text
    • https://astdubai.co/userfiles/files/2809896145.pdfIn PDF document text
    • http://gt-outillages.fr/ressource/site-image/files/32360186400.pdfIn PDF document text
    • http://makaeximworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c9c434d99b5---bejezatijibisipetorejuk.pdfIn PDF document text
    • https://www.helpfulhunks.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160954a55c1eb5---durowenizarasiwavizasebon.pdfIn PDF document text
    • http://www.goataxiservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ee6f6f1576b---72952777935.pdfIn PDF document text
    • http://asu.com.vn/wp-content/plugins/super-forms/uploads/php/files/trvsm4h6ouqsj5deom7p01vdln/15022102433.pdfIn PDF document text
    • http://burragebrothers.net/demo/jolie/beta/userfiles/files/56120594613.pdfIn PDF document text
    • https://samiznojmo.cz/wp-content/plugins/super-forms/uploads/php/files/4c49899db97fe1e5a9dc262db5d40c64/denowuto.pdfIn PDF document text
    • https://eyetracking.pl/userfiles/file/tugodupivixinedodanudiv.pdfIn PDF document text
    • https://haltia.mx/sii/ckfinder/userfiles/files/bulatosijazaboma.pdfIn PDF document text
    • http://bagpack.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/1609b24f699939---54941442041.pdfIn PDF document text
    • http://solarhomepage.ch/fckeditor/editor/images/file/52575569145.pdfIn PDF document text
    • http://circolosilverblufitnessclub.eu/userfiles/files/80324637008.pdfIn PDF document text
    • http://theopenhouseclub.com/wp-content/plugins/super-forms/uploads/php/files/6b9885fa1e6920b9e2b5c04c29c033c8/81898171356.pdfIn PDF document text
    • https://vashadvokat82.ru/wp-content/plugins/super-forms/uploads/php/files/b611fb5326df1a5c041f61cfe41a2368/66098838685.pdfIn PDF document text
    • https://tuabogadoangel.com/wp-content/plugins/super-forms/uploads/php/files/461805d7259faf42e0e9816a508abf62/pujidufegupar.pdfIn PDF document text
    • https://rockyhotelsgroup.com/uploaded/files/2656126605.pdfIn PDF document text
    • http://industrialsupplies.pk/userfiles/files/pixifo.pdfIn PDF document text
    • https://kodeac.com/wp-content/plugins/super-forms/uploads/php/files/kfa7742qlo08i6lrgtncmc5877/7353282430.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=discord+infinity+roleplayPDF link annotation
    • http://s292376414.onlinehome.fr/datas/imgmail/file/luzitikunimujowatebipas.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dabc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDABC 10728 bytes
SHA-256: 497b199e95d2ffaefece6fc9eb6a683a62a15bf2fe91e532fb3b9f86bc5c2dd4
font_01_sfnt_off0000f381.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF381 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010b93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B93 20928 bytes
SHA-256: 1ee70f11f8e0d0b6f02bc2947f06c862458fe857f033e403cb49de279166437e