Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0c48e8dcda2af2d…

MALICIOUS

PDF

80.2 KB Created: 2021-09-18 13:36:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: f4ea547a65a270bc085a2ef25257e7f3 SHA-1: 596d02f9a2572490e0b68e4d6d262934b16d8b30 SHA-256: e0c48e8dcda2af2db71ec445ca1360daafd1051d627358a3a60b47bbfaf04877
164 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, many of which are hosted on compromised WordPress sites or disposable hosting, suggesting a link farm or phishing attempt. The presence of a 'download button' heuristic further supports the lure of downloading potentially malicious content. ClamAV detection and ML classification confirm the malicious nature of the file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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://irlanc.ru/uplcv?utm_term=flix+tv+apk+for+android+tv PDF link annotation
    • http://wtmongolia.com/materials/file/64978429377.pdfIn PDF document text
    • https://rajakeempat.com/contents/files/rorukuvokoxatu.pdfIn PDF document text
    • http://grani-tonkogo-mira.ru/wp-content/plugins/super-forms/uploads/php/files/fa7b47d75d21372422bf2b97f3ab24a1/kovojubedalogilavilutalo.pdfIn PDF document text
    • http://le-lemniscus-incandescent.fr/ckeditor/upload/files/dexutukiwegu.pdfIn PDF document text
    • http://kesherisrael.com/uploadEditor/files/tipizigijuzured.pdfIn PDF document text
    • http://blossomtour.net/FileData/ckfinder/files/20210910_809675C930EE7BE8.pdfIn PDF document text
    • http://qianlong99.org/ckfinder/userfiles/files/gujizubikazos.pdfIn PDF document text
    • https://avukatwebsitesi.trakyasoft.com/upload/files/zuwifetalozuvezuk.pdfIn PDF document text
    • http://hoachattn.com/image/files/mekugefazagepakupagel.pdfIn PDF document text
    • http://sichera.eu/userfiles/files/71502798128.pdfIn PDF document text
    • https://menu2uplus.com/images/file/bapebelagazolalotixivixif.pdfIn PDF document text
    • http://www.louthadventures.ie/wp-content/plugins/formcraft/file-upload/server/content/files/16140266eeb1f4---depegewejolivoba.pdfIn PDF document text
    • http://sayarbobinaj.com/file/welofujinilifezavebaz.pdfIn PDF document text
    • https://lengthening-sldf.com/userfiles/file/gomekagixigonujotubogul.pdfIn PDF document text
    • http://rdmsrl.it/userfiles/files/43424279148.pdfIn PDF document text
    • http://deurwater.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613289f16ba69---buzofiwunedazalowesib.pdfIn PDF document text
    • http://studiodebiaggi.eu/userfiles/files/1684257349.pdfIn PDF document text
    • https://npkfertilizerproduction.com/d/files/86956760777.pdfIn PDF document text
    • https://tjp2-hotlink-j3t.com/contents/files/82538089786.pdfIn PDF document text
    • https://www.clubmanizales.com.co/wp-content/plugins/formcraft/file-upload/server/content/files/16136ebb00d7b8---digelodedowogowodaja.pdfIn PDF document text
    • https://jager-ig.tw/up_photo/file/razasafupowe.pdfIn PDF document text
    • http://funagamex.vn/PhuongNamGroup/userfiles/files/neziwozena.pdfIn PDF document text
    • https://laznia-radom.pl/userfiles/file/90302529106.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_off0000d362.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD362 10428 bytes
SHA-256: 90e6a2287f77756e0533aae2f81549e6d8e7160e8f0c4bfe6c665d3c31833143
font_01_sfnt_off0000eb15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB15 18504 bytes
SHA-256: 7f50af9a75c9947f50a5055705d3fa65203891ed664a37a250d014f606ce4037
font_02_sfnt_off00011b2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B2E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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