Malicious PDF — malware analysis report

Static analysis result for SHA-256 954de237d6484287…

MALICIOUS

PDF

203.8 KB Created: 2021-06-30 06:48:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: f1070051fbb9bfb01c89d4702847280b SHA-1: ecf0bc2e845c58e6a024cde1680b9bb927b99e10 SHA-256: 954de237d648428748a1774d1b93b1c40e52529132b4ac73bf6554349cbcf4bd
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs, many of which point to compromised WordPress sites used for hosting malicious files. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the presence of numerous suspicious links suggests an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9909

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://oniceh.ru/uplcv?utm_term=icd+10+code+for+itp
    • https://www.paparazzirestaurant.com.au/wp-content/plugins/super-forms/uploads/php/files/e0fb3edc06e63511deeb0f2f1d4bd192/59575139310.pdf
    • http://bagumul.com/file_upload/spaw_upload/file/20210512181248.pdf
    • https://suprizpin.com/calisma2/files/uploads/bimaruvobipe.pdf
    • https://criteriacambio.com.br/wp-content/plugins/super-forms/uploads/php/files/5v965iscke0p0oc9dtc8svduef/jefenixasoguxosawojidepis.pdf
    • http://princeworldwide.com/multimedia/userfiles/file/32988580815.pdf
    • http://mspchicagolaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/golevogojipegabaz.pdf
    • https://www.mobytec.com.br/mobytec/wp-content/plugins/formcraft/file-upload/server/content/files/1608d21a62fd53---68059104696.pdf
    • http://vladjurnalist.ru/archive/file/88088175339.pdf
    • https://oneremote.ru/wp-content/plugins/super-forms/uploads/php/files/8607250186a43f5ff4918d4417ae1a0c/laninofozewepekegakot.pdf
    • https://holocaustresearch.pl/nowy/photo/file/safejidu.pdf
    • https://bandotrading.com/uploads/file/85423927931.pdf
    • https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/34d5qvee7ecg9bl84tl63u2tmi/zigufaxogedifesapo.pdf
    • http://gz-theoutfit.com/UploadFiles/FCKeditor/20210606014817.pdf
    • https://wscnaturalhealings.com/wp-content/plugins/super-forms/uploads/php/files/54969d4931a3fe7b4a519321eda1fda1/9490397069.pdf
    • https://samiznojmo.cz/wp-content/plugins/super-forms/uploads/php/files/c463fb577dfb8fdb82f05e2eb7371936/bubegomagulogitidubitela.pdf
    • http://unipsyclinic.com/userfiles/file/20210516015211.pdf
    • https://www.allterra.group/wp-content/plugins/super-forms/uploads/php/files/6dc676a957953c6ba709607d15b0d9a9/94016811175.pdf
    • http://dlt-nkp.com/fileupload//file/susasasiwawireboxalegawan.pdf
    • https://primeodontorj.com/wp-content/plugins/super-forms/uploads/php/files/23e8ca0c71042b371b911336d6766a63/42265769004.pdf
    • http://blpest.com/UserFiles/file/xumat.pdf
    • http://dichvugiayphep.net/hinhanh_fckeditor/file/77911377005.pdf
    • https://baohohoanglong.com/userfiles/file/zukodoz.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_off0002bee7.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BEE7 16792 bytes
font_01_sfnt_off0002d6fe.bin
5cf226abb899bdbaca3dbf4448bb5973b8b35d19be12c22da4cd46e396547719		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D6FE 10260 bytes
font_02_sfnt_off0002ee2e.bin
d3e4f7fb1e2b266a2c101a013a068324c55c23e0ee5c042790bea89589aa3b6d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2EE2E 20200 bytes

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