Malicious PDF — malware analysis report

Static analysis result for SHA-256 69f7f113249f1154…

MALICIOUS

PDF

85.8 KB Created: 2021-06-27 20:41:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: d005f625f4c62dcfc62278f7ffc44229 SHA-1: ef005d4f258ea37a556155542d8ecac5ff047746 SHA-256: 69f7f113249f1154d8e83d4e4b7fb930f290a119b79af891acf39d74285bb63c
164 Risk Score

Malware Insights

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

This PDF document was flagged by multiple heuristics and an ML classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains numerous links to external websites, some of which appear to be compromised WordPress upload directories or disposable hosting, suggesting a phishing or malware distribution attempt. The presence of a visual download button further supports a lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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://allytemp.ru/uplcv?utm_term=joint+declaration+form+epf+download+pdf
    • http://kawoka.com/userfiles/file/1703003188.pdf
    • http://www.trimbleexpress.sk/wp-content/plugins/formcraft/file-upload/server/content/files/160c5aded9e4dd---96105158357.pdf
    • http://geoplan.su/userfiles/file/gogorubosupabitigigo.pdf
    • http://www.patricktennis.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16091b61b6291d---69657171703.pdf
    • https://brothers-music.com/ckfinder/userfiles/files/kodivozuvobivu.pdf
    • https://penzionradvanice.cz/res/file/18127961501.pdf
    • http://trackeg.com/en/wp-content/plugins/formcraft/file-upload/server/content/files/1607428e81e6e7---gekulavisonepuwuxofutu.pdf
    • https://www.lang-mayer.de/wp-content/plugins/formcraft/file-upload/server/content/files/16099ae34b8d5e---daradipofajiwubekobijox.pdf
    • http://workcoop.org/fckeditor/userimages/file/20210620064227.pdf
    • http://www.firengo.com/userfiles/files/mifixojubujilevokovet.pdf
    • http://www.radioemka.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078b0ab844bd---84528452998.pdf
    • http://www.contectrade.hu/fckfiles/file/mutulatojedojelogij.pdf
    • https://riverasphotovideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b76fb3b1d2---58998146243.pdf
    • http://villaturri.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d47f8bc3a02---dopepire.pdf
    • http://asdgolfclubtoscana.com/writable/public/userfiles/file/befurojozuvon.pdf
    • https://bandotrading.it/uploads/file/94917187652.pdf
    • http://vilaportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086bce42f75b---dafowewarekuforimemo.pdf
    • http://beckydavidsonhomes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c99227f3dd2---sekege.pdf
    • https://ahi.com.ua/wp-content/plugins/super-forms/uploads/php/files/bf57bd79b2679d5346e49f335a30b6fd/kewovinipixum.pdf
    • http://www.naturapreserved.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099a5e06d35c---robesinufapiwilaxakateg.pdf
    • http://www.hollyskauaicondo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070704f1b7b5---35131637037.pdf
    • http://jointrilogy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ccd7580d0e---91597788647.pdf
    • https://carthink.org/wp-content/plugins/formcraft/file-upload/server/content/files/160d22a85c10bd---79411856037.pdf
    • https://aslimitada.com/userfiles/file/83026122754.pdf
    • https://tiguan-wiki.ru/file/mamulalupexukewugaw.pdf
    • 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_off0000ec3e.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xEC3E 16792 bytes
font_01_sfnt_off00010455.bin
c91aaf0326bf16f3e4a01b9a40d1e93961dfa830a594a39b613c9b6505ed53c5
pdf-font-stream PDF embedded font (sfnt) at offset 0x10455 10688 bytes
font_02_sfnt_off00011cda.bin
17f7aa0524a1eac92562b1bb9e6c07533137884aa858eaf5f6f1f7915724549a
pdf-font-stream PDF embedded font (sfnt) at offset 0x11CDA 17568 bytes