Malicious PDF — malware analysis report

Static analysis result for SHA-256 beb12042cc4e2ba9…

MALICIOUS

PDF

82.0 KB Created: 2021-08-29 11:16:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: c0602e5cd8c497621159eb471968094e SHA-1: 172650b4bd23e055e42bdc8177ae319a2c2a6c6b SHA-256: beb12042cc4e2ba9a7d7dcdbba5e29a84053d0cd332363c0d871b3be6d94a7b9
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains a link farm pointing to multiple compromised or disposable domains, suggesting an attempt to redirect users to malicious content. The PDF structure and embedded links are indicative of a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9944

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 http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/f20e0mos8trer1ff85gevoevp2/vixagirojorevu.pdf In PDF document text
    • http://eggtesting.com/admin/uploads/file/gamevijajukibune.pdfIn PDF document text
    • https://www.finestkindcharter.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c7b9de9c35---59671598288.pdfIn PDF document text
    • http://xn--vb0b83rba554gca.kr/page_data/file/20210510095330.pdfIn PDF document text
    • http://stitesattorney.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/49192145904.pdfIn PDF document text
    • https://grand-forge.ru/wp-content/plugins/super-forms/uploads/php/files/57b083e69c75f3307e3f03de4abf24f1/majufigipumu.pdfIn PDF document text
    • https://qnzar.com/files/joxolomiwapafisisemigo.pdfIn PDF document text
    • http://ck-kutnahora.cz/gais/image/file/xitor.pdfIn PDF document text
    • https://foxtailmag.net/wp-content/plugins/super-forms/uploads/php/files/bbd19cf1a87e4852e2e180645ea0f5b5/fukirawesi.pdfIn PDF document text
    • https://www.golaw.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608b0299b2fa3---86994980441.pdfIn PDF document text
    • https://washlounge.in/ckfinder/userfiles/files/37436095915.pdfIn PDF document text
    • http://conservationenergy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ed36c8edb38---numodegisixi.pdfIn PDF document text
    • http://sk4education.com/ckfinder/userfiles/files/29682004330.pdfIn PDF document text
    • https://www.ccps.mx/wp-content/plugins/super-forms/uploads/php/files/7a92d6aaaedc2f3e8469fba5238907be/wugoxesutalopurukafe.pdfIn PDF document text
    • http://talani.nl/userfiles/image/file/gekapekatunuvugenero.pdfIn PDF document text
    • https://luxartparquet.com/wp-content/plugins/super-forms/uploads/php/files/b86bcb15848060d109f79f16c63c9cd6/nodafibovo.pdfIn PDF document text
    • https://twinslock.com/ckfinder/userfiles/files/sibavafinagilefu.pdfIn PDF document text
    • https://sahyadrisevasanstha.in/userfiles/file/17138587466.pdfIn PDF document text
    • http://www.sbawerribee.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1610aa14625c79---97686022536.pdfIn PDF document text
    • https://www.kiakaha.gr/wp-content/plugins/super-forms/uploads/php/files/qhqarlk77hcvcgct070bmhb7v1/13408370827.pdfIn PDF document text
    • http://debten.net/UserFiles/File/numiwebarirotizuxodokeka.pdfIn PDF document text
    • http://marcth.pl/media/fck/file/tijurowal.pdfIn PDF document text
    • https://paklya.su/design/img/upload/file/kubuw.pdfIn PDF document text
    • http://storemisr.com/uploads/files/7797245582.pdfIn PDF document text
    • https://namastehealth.in/wp-content/plugins/super-forms/uploads/php/files/ottt5tibht54gnoel83pr6nmj2/96085259283.pdfIn PDF document text
    • http://debeight.net/UserFiles/File/98963211107.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=quotes+on+i+hate+myselfPDF 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_off0000db31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB31 18452 bytes
SHA-256: 09709cd3bc9234c1b4d18ae7286c4db0469c23490bb47d56d91013adbbee8284
font_01_sfnt_off000109b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109B0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000121c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121C7 10652 bytes
SHA-256: 06a70a3b88aed0fa029dfdd390b60939b54b28598a72cbed10547a80abf73468