Malicious PDF — malware analysis report

Static analysis result for SHA-256 544038e2dd007103…

MALICIOUS

PDF

90.9 KB Created: 2021-07-25 14:11:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-17
MD5: e1c8a1ba8b78319ffad072e8da1ae5f3 SHA-1: 59b941b0c93447ab5a92621a41c81d0b9deedebe SHA-256: 544038e2dd0071039e1a4f71272ee6b4cbfd6d6f8a5f6acfa47ebd38b62d3807
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous links, many of which point to compromised WordPress sites. These links are likely intended to lure users to phishing pages or download further malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

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://xn--80aaaglcftt5alesfkk7f.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/4bc5282db05e15bbda00ed2769159cd5/wekasadisinebegumikuzu.pdf In PDF document text
    • http://www.hypnotiseur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f95f29893f---nezudajerusugup.pdfIn PDF document text
    • http://faceconnects.com/ci/userfiles/files/74839482259.pdfIn PDF document text
    • https://www.inter-tube.co.uk/wp-content/plugins/super-forms/uploads/php/files/7dd4d7b6b90150221a2327675881fbb8/74107279937.pdfIn PDF document text
    • http://vendsol.com/userfiles/file/wepigijol.pdfIn PDF document text
    • https://www.rath-catering.de/wp-content/plugins/formcraft/file-upload/server/content/files/160cd8968a6ade---wezafaxejatorozuno.pdfIn PDF document text
    • https://purpleleafestatebuyers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c90f4a681c---tolokataxemumabewox.pdfIn PDF document text
    • https://emergent-partners.com/wp-content/plugins/formcraft/file-upload/server/content/files/160800a1bb9f4e---47528288684.pdfIn PDF document text
    • http://pnmanagementsolutions.in/uploads/kinuvexopijagare.pdfIn PDF document text
    • http://pvsystreports.com/wp-content/plugins/super-forms/uploads/php/files/942opu17d2akj93tvn775l52u2/pujuxubutefupovafuzote.pdfIn PDF document text
    • https://deewo.de/wp-content/plugins/formcraft/file-upload/server/content/files/160827304d845c---dapafogirutatafomogefazot.pdfIn PDF document text
    • https://e-lightingcontrols.com/wp-content/plugins/super-forms/uploads/php/files/88e9e28177fec0a89557c9d237d99de9/didoxodatolija.pdfIn PDF document text
    • http://bharatdarshan.net/rgroup/ckfinder/userfiles/files/munuxuku.pdfIn PDF document text
    • https://mebelpozakazu.ru/wp-content/plugins/super-forms/uploads/php/files/3027a691627c78adc88486e4ed352935/36201743136.pdfIn PDF document text
    • https://www.booster-p.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608530eada103---40904460969.pdfIn PDF document text
    • http://svsteinfurth.de/radsportfiles/file/62062439301.pdfIn PDF document text
    • https://nicklason.se/ckfinder/userfiles/files/xugere.pdfIn PDF document text
    • http://natur-pet.cz/webpagebuilder/ckfinder/userfiles/files/50973189699.pdfIn PDF document text
    • http://phayaotechno.com/UserFiles/File/pebejezobojafagipev.pdfIn PDF document text
    • http://www.barankayalar.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160adbda693212---koxulonofiwazuzudujoge.pdfIn PDF document text
    • http://aaaexpressac.com/userfiles/file/zogifomaf.pdfIn PDF document text
    • https://rcvizovice.cz/ckfinder/userfiles/files/ruvugulawi.pdfIn PDF document text
    • https://otdelkamos.ru/wp-content/plugins/super-forms/uploads/php/files/d84cf24ecf9c00251a75ec39eef45c21/94860350995.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=exercices+sur+les+familles+de+mots+cm1+pdfPDF link annotation
    • 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_off0000f32d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF32D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010b3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B3F 21484 bytes
SHA-256: f63fd9e60a9e9af35987999b9dd51a4934fc450a01ac850553d32ce05bc73ac2
font_02_sfnt_off000141df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x141DF 10912 bytes
SHA-256: 26aa36c409a01ac9ec4fd3c45ca1b329eccdf76d526ac446d80eec9ae4104d10

Open this report in the interactive analyzer, or submit your own file for analysis.