Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e9f496acf63ace6…

MALICIOUS

PDF

71.2 KB Created: 2021-09-29 13:32:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 1b88a5fa329dee86507f88bb216cacbc SHA-1: a773007a868da1b89e2c77d8496c5faf0b40a84d SHA-256: 2e9f496acf63ace6322df03ce2165f19f3a43060cc86cbd322ef1c84023ff25d
156 Risk Score

Malware Insights

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

This PDF file contains numerous embedded URLs, many of which point to compromised websites or are part of a link farm designed to direct users to potentially malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution through these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9893

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://philabc.ru/uplcv?utm_term=game+simulasi+kencan+android+offline PDF link annotation
    • https://travelinnsuites.com/nbloom/fckuploads/file/nixiwibawujolota.pdfIn PDF document text
    • https://www.sacict.or.th/ckfinder/userfiles/files/koduvudixezaguw.pdfIn PDF document text
    • https://florerialafloresta.com/ckfinder/userfiles/files/73266257056.pdfIn PDF document text
    • http://www.teaterskolen-efteruddannelsen.dk/ckfinder/userfiles/files/39166976138.pdfIn PDF document text
    • https://dukupahit.com/contents/files/mutivigarufukanogesadaxu.pdfIn PDF document text
    • https://mavismanagement.com/wp-content/plugins/formcraft/file-upload/server/content/files/16145ba848c9b7---69384248817.pdfIn PDF document text
    • http://twilaw.com/files/files/2322755133.pdfIn PDF document text
    • https://www.harnoordesigns.com/wp-content/plugins/super-forms/uploads/php/files/5f237a4ede4290354a984aab1df2a99f/lojanoderekokuze.pdfIn PDF document text
    • https://smwebtechnology.com/arishayurveda.com/userfiles/file/zenowixivarogowomewize.pdfIn PDF document text
    • https://inchiriereelicopterromania.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16142c16065de3---60783247575.pdfIn PDF document text
    • http://rayanchem.com/d/files/29583368595.pdfIn PDF document text
    • http://ecohort.com/userfiles/files/44266482180.pdfIn PDF document text
    • http://saydersan.com/firma/files/tuvajokiranuxidim.pdfIn PDF document text
    • http://vandientuchinhhang.com/upload/files/bezawapowadifan.pdfIn PDF document text
    • https://dimensioninteractive.com/WYSIWYGImage/file/sivujijonipasabuf.pdfIn PDF document text
    • https://hitourkorea.com/FileData/ckfinder/files/20210921_7FD3FE5231E6940C.pdfIn PDF document text
    • http://lightofislamonair.org/uploads/files/42482417204.pdfIn PDF document text
    • http://aeskulap24h.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613eaa99d9ea4---gomopitineripudepiri.pdfIn PDF document text
    • https://gencshow.com/upload/ckfinder/files/16214879916.pdfIn PDF document text
    • http://garmaclima.com/uploads/ckfinder/files/76136739008.pdfIn PDF document text
    • https://bcbc3399.com/upload/files/refezugiw.pdfIn PDF document text
    • http://www.korayozelguvenlik.com/wp-content/plugins/formcraft/file-upload/server/content/files/16150d2501fa85---70192469784.pdfIn PDF document text
    • http://veterky.ru/ckfinder/userfiles/files/rerasuxixuxo.pdfIn PDF document text
    • http://faurau.com/luodan/images/userfiles/file/14091888310.pdfIn PDF document text
    • http://conservationenergy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614f98a9187d5---47135435147.pdfIn PDF document text
    • https://markzone.az/wp-content/plugins/super-forms/uploads/php/files/nf0c876r6eon10efavk00k9ns5/sasolotenajugewofujoliru.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_off0000b444.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB444 10768 bytes
SHA-256: 0fe5111f718f3cba61c0e2e3975685cfa6d5f6f6930bdec8b72b318ee3138826
font_01_sfnt_off0000ccfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCFB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000e50d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE50D 16732 bytes
SHA-256: 3b003262985484bc758d5067123acb61b27a3577064949cf0018a3357677c6c2

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