Malicious PDF — malware analysis report

Static analysis result for SHA-256 d34a069c358c90f3…

MALICIOUS

PDF

91.6 KB Created: 2021-09-02 16:58:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: e3bda7bc8113620ef2b1acf1f0f3691d SHA-1: 0a8523c9c7503e5d6e97bdbdbe96d8ccd2e3176f SHA-256: d34a069c358c90f3287adf556e3eb33a8c0bc1314d1756eb4a171e54543e0c96
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, directing users to various compromised websites and disposable hosting, likely to download further malware. The presence of embedded URLs and the 'Download Button' heuristic suggest a phishing or social engineering lure to trick users into downloading malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9930

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://landi-bg.com/images/file/80177908525.pdf In PDF document text
    • https://techson-cctv.com/upload/file/rolorojifak.pdfIn PDF document text
    • https://xlux.vn/wp-content/plugins/super-forms/uploads/php/files/mu0k20td47dp3k24hdse54va1f/loxaposopofuxiz.pdfIn PDF document text
    • https://liftsystems.ro/LiftFiles/file/6427528437.pdfIn PDF document text
    • http://limitlessillusion.com/wp-content/plugins/super-forms/uploads/php/files/968ef105214e0a66e7aa8bef8d1ad7b9/bumosajetiwevapevamodap.pdfIn PDF document text
    • http://staceyasp.com/UserFiles/file/vaxejomuwug.pdfIn PDF document text
    • http://inwallendorf.de/userfiles/file/dowotaxeridilopefik.pdfIn PDF document text
    • http://kazenergy.kz/wp-content/plugins/formcraft/file-upload/server/content/files/160a42b1d82430---17093583496.pdfIn PDF document text
    • http://www.marcelasemper.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b8b870b6de1---73261391464.pdfIn PDF document text
    • http://www.radiopopiatej.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607cdb787a90f---43852754974.pdfIn PDF document text
    • http://abogadosaguilar.com/ckfinder/userfiles/files/32536107208.pdfIn PDF document text
    • https://reifenscho.de/wp-content/plugins/formcraft/file-upload/server/content/files/1610ae1d74b8bb---42274112650.pdfIn PDF document text
    • http://pocatellocampfire.com/wp-content/plugins/super-forms/uploads/php/files/ajsao429heqtjqkp98aijv2pqk/75199531276.pdfIn PDF document text
    • http://studiolegalebisantis.it/userfiles/files/6384243705.pdfIn PDF document text
    • https://rosemonttherapy.health/wp-content/plugins/super-forms/uploads/php/files/a3j0pcaep28advlocmkf1goidv/kujoramizadumurepumuba.pdfIn PDF document text
    • http://boxethai38.com/upload/file/52129639944.pdfIn PDF document text
    • https://accesoriosalmayor.com/images/userfiles/file/nukuga.pdfIn PDF document text
    • http://rafaelstore.ru/upload/files/91120968668.pdfIn PDF document text
    • http://friluftsgruppen.se/wp-content/plugins/formcraft/file-upload/server/content/files/160fb231c5eb29---liburavakusinu.pdfIn PDF document text
    • http://foire-fromages-et-vins.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611842c66dd4d---paxejinapapolerajaw.pdfIn PDF document text
    • http://rutherford58.com/clients/5/5b/5b2824e44de76337c32dfcbc3ee6dba3/File/48674479353.pdfIn PDF document text
    • https://karpzbeldowa.pl/uploads/userfiles/files/pefuxajazirujidemiraro.pdfIn PDF document text
    • https://novitas.ro/files/lirogekogasarurol.pdfIn PDF document text
    • https://www.femregenx.co.za/wp-content/plugins/super-forms/uploads/php/files/78ivhgdh07d4n2e2dlr8a18j3l/nijelowegetawitesom.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=chuy%E1%BB%83n+file+powerpoint+sang+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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000da2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA2B 23312 bytes
SHA-256: e4daa837fa620ba3fe205a09d47d9c285798ca3f43afb1d3fd0dc6dc7c724ba3
font_01_sfnt_off00011565.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11565 11340 bytes
SHA-256: b6f8b3283b0a91d22a2603c937b51fb4225f490aaa7ab353297592724ad8a173
font_02_sfnt_off00012fab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12FAB 16336 bytes
SHA-256: 37fa009baa434e56c9d0f8ca1702f29491c8feadf2083bd43354ef44a2d54d92
font_03_sfnt_off00014603.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14603 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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