Malicious PDF — malware analysis report

Static analysis result for SHA-256 60ee8ec04f57f9db…

MALICIOUS

PDF

83.1 KB Created: 2021-06-25 17:41:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 93e8c5e9f1ce1403c38a98cbfb93a836 SHA-1: 4c8fbbbd8164636f5137b2dded456f99a504ffbc SHA-256: 60ee8ec04f57f9db3e1dc7c48985e91c3519496df26afd4ab070a392528e269e
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to compromised WordPress sites, suggesting a phishing or malware distribution campaign. The ClamAV detection and ML classifier strongly indicate malicious intent, likely to trick users into downloading further malware. While no scripts were directly extracted, the PDF structure and link farm heuristics point towards a malicious document designed to exploit users via deceptive links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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 http://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/b1637574e5a427e7a5b09b639df0a122/fomisixevizal.pdf
    • https://ensasoft.com.tr/wp-content/plugins/super-forms/uploads/php/files/9mv58qp256uj2mqg5s3bbviflu/35511895105.pdf
    • http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/tpbrmmin08ds3va6l2egvalp25/6797644010.pdf
    • https://narimasu-chintai.net/jcfiles/file/vepeme.pdf
    • https://www.karavanlakesfet.com/wp-content/plugins/super-forms/uploads/php/files/eccc74e237ef0d0e3d397b22fa268d64/butul.pdf
    • https://advancedbusiness.co/wp-content/plugins/super-forms/uploads/php/files/132c2e10f75c511c6e337c534b5b623d/rupipawekefefamopube.pdf
    • https://www.blackandwhite-salon.com/wp-content/plugins/super-forms/uploads/php/files/22c5625709ae24c916b128c53918e836/zukalajodiwalofomo.pdf
    • http://eduomania.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b2415e296d4---3592149034.pdf
    • https://m-co.de/wp-content/plugins/super-forms/uploads/php/files/39htqb8dfu63ldoc1agu7nnu14/dodoserenalesamizebe.pdf
    • http://asfalon.com/__files/file/43911006775.pdf
    • http://abnicum.com/files/file/38477040784.pdf
    • http://plenar.hr/wp-content/plugins/formcraft/file-upload/server/content/files/16071b8086aea6---rewemokuxanewo.pdf
    • http://aarogyamedico.com/userfiles/file/15182033200.pdf
    • http://waltwhitman1964grads.com/clients/6/6c/6c9ae932573016e5ff31759a10dce4b4/File/bakejexuwiluzepa.pdf
    • http://www.anieliasfx.com/uploads/textareas/file/61206555480.pdf
    • http://chronocertif.com/userfiles/file/24957981856.pdf
    • https://amrapalispot.com/userfiles/file/vaborezap.pdf
    • https://www.formwork.co.uk/wp-content/plugins/super-forms/uploads/php/files/dvtghu9rjti9pakenju9to2dc0/rojasosobavikubasujunu.pdf
    • https://churchosonline.com/wp-content/plugins/super-forms/uploads/php/files/aef815c8f24de398b985063340003878/monopasunilinanapatat.pdf
    • http://call.ae/wp-content/plugins/formcraft/file-upload/server/content/files/160bb4e268e00b---wejatizisulodetokudokeju.pdf
    • https://angelsstaff.com/uploads/file/45572062995.pdf
    • http://alexanderkanevskyartistbiography.com/clientMedia/file/vekavilolenimarubedadij.pdf
    • https://www.amiunaorchestra.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1606f22521f980---46943629620.pdf
    • http://gibisch.org/files/files/numev.pdf
    • https://evg-prague.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160b2e8ec32bbf---5963572948.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=ict+assignment+class+9+answer
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e397.bin
dffcc6ad5b2ee47b0bb8fa98226ac773d14b7c90fd9b4af3fa35a181d2609469
pdf-font-stream PDF embedded font (sfnt) at offset 0xE397 10660 bytes
font_01_sfnt_off0000fc14.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xFC14 16792 bytes
font_02_sfnt_off00011426.bin
e277f4dc324a222a57594414836bfcf15ff034a5e76934ce70a6efe1ef483043
pdf-font-stream PDF embedded font (sfnt) at offset 0x11426 16560 bytes