Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c5013ee1962c648…

MALICIOUS

PDF

86.3 KB Created: 2021-09-19 14:51:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 62b30864e45babe8a1c8e0b5c2a80c2e SHA-1: ae5dcc6c42abf67c5f2958c50b1bbf7fed3a87cd SHA-256: 5c5013ee1962c6488ae721b2250920f820a270f1cb030fed0851cdaceba0f100
172 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains embedded JavaScript and multiple external links, many pointing to compromised CMS uploads or disposable hosting, suggesting an attempt to deliver a payload or redirect users to malicious content. The ClamAV detection and ML classifier further support its malicious nature, indicating it's likely a phishing or trojan delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

Heuristics 8

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://smidgel.ru/uplcv?utm_term=dead+zed+2+unblocked+hacked PDF link annotation
    • https://eliteplacementagency.com/uploads/files/34024188347.pdfIn PDF document text
    • https://lee-trading.tw/archive/upload/files/28434635230.pdfIn PDF document text
    • https://eliteplacementagency.com/uploads/files/vepexabuguraduniminaw.pdfIn PDF document text
    • http://bargiel.com.pl/ckfinder/userfiles/files/pumogalugefezurovemu.pdfIn PDF document text
    • http://geredekombiservisi.com/userfiles/file/megeposibokik.pdfIn PDF document text
    • https://bvphcn.bdata.vn/upload/files/84273583994.pdfIn PDF document text
    • https://satbietthu.com/luutru/files/libut.pdfIn PDF document text
    • http://elsekmont.eu/userfiles/file/xejurap.pdfIn PDF document text
    • http://www.cemeba.com/uploads/ckfinder/files/forerobiwesiwixojosudine.pdfIn PDF document text
    • https://www.teppiche-waschen-hamburg.de/wp-content/plugins/formcraft/file-upload/server/content/files/16139e741ecad6---9747748092.pdfIn PDF document text
    • https://noukos.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1614231ec4b01a---xezugokajidigopagodixob.pdfIn PDF document text
    • https://apra.pl/files/file/newizojenozabaxa.pdfIn PDF document text
    • http://bk-plus.at/userfiles/files/mejetuputoxorew.pdfIn PDF document text
    • https://kuechentreff-schmid.de/wp-content/plugins/super-forms/uploads/php/files/5ag6nq6mqc8k0vjjvjjkue8jhe/10162333108.pdfIn PDF document text
    • https://u-spot.biz/js/ckfinder/userfiles/files/zixasimorizavaf.pdfIn PDF document text
    • https://zivotzaokny.eu/res/file/27383105701.pdfIn PDF document text
    • http://redigonda.it/userfiles/files/93221824687.pdfIn PDF document text
    • http://freeorden.com/media/file/faxilanoxim.pdfIn PDF document text
    • http://candientushinko.com/images/file/digivumivosivamurivawex.pdfIn PDF document text
    • http://dreamwith.gni.kr/ckupload/files/sawig.pdfIn PDF document text
    • https://nakatarikaszel.pl/app/webroot/userfiles/file/zeruloxakazununizaji.pdfIn PDF document text
    • http://synowka.pl/galeria/file/44031501572.pdfIn PDF document text
    • https://orcasproje.com/userfiles/file/tilipuzuxirevaz.pdfIn PDF document text
    • https://assurancemauricie.com/wp-content/plugins/formcraft/file-upload/server/content/files/161371f3c95c4b---gosawiw.pdfIn PDF document text
    • http://ordineveterinarireggioemilia.it/userfiles/files/33523984372.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d45e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD45E 17316 bytes
SHA-256: 1673c731961bfa73a7c889dc0d74443a89acb01696c72798834df7e26f09a6a9
font_01_sfnt_off000100c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100C2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000118d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118D9 10524 bytes
SHA-256: 0f7133254659c20156f8742e4b9c99364ec604a4c12d088e7e89d07bca15e980
font_03_sfnt_off000130c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x130C7 17496 bytes
SHA-256: 34937f13dc99c04250e946a77e6e1667f32c286973ffe9efe1be4b5a84baf4f2

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