Malicious PDF — malware analysis report

Static analysis result for SHA-256 69a06d4076d934b0…

MALICIOUS

PDF

82.1 KB Created: 2021-09-16 18:24:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: b31cd90f9d4fab037543939c7b517e95 SHA-1: afc79862ac21e7685bc121a0eb3740b9a02e5074 SHA-256: 69a06d4076d934b076b76736bb80714d344fd75857e135040a9a09b82c78e094
164 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV. It functions as a link farm, containing numerous embedded URLs that redirect to external sites, some hosted on compromised CMS platforms. The presence of a 'download button' lure and the overall structure suggest an attempt to trick users into clicking malicious links, likely leading to phishing or further malware infection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 7

  • 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.
  • 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://a1-automotivegroup.com/upload/files/fevotiz.pdf In PDF document text
    • http://afslab.asia/upload/files/vilipasorukavadoluxipag.pdfIn PDF document text
    • https://chocoinmobiliario.com/wp-content/plugins/super-forms/uploads/php/files/4f1f06de313ffdb090b544d793a937c6/2087809781.pdfIn PDF document text
    • http://www.masozilina.sk/ckfinder/userfiles/files/97714330916.pdfIn PDF document text
    • http://kemmurad.com/webroot/img/files/37517542932.pdfIn PDF document text
    • http://quiltingacademy.info/fckeditor/userfiles/file/zimifoxomomuzir.pdfIn PDF document text
    • http://sistersaviopublicschool.com/userfiles/file/49430737933.pdfIn PDF document text
    • http://nfc.soo.jp/file/44014320961.pdfIn PDF document text
    • https://www.hauptsache.cc/wp-content/plugins/formcraft/file-upload/server/content/files/161301be1d0de2---sefowivujilazitafu.pdfIn PDF document text
    • http://kiddeefire.com/media/userfiles/files/14417652415.pdfIn PDF document text
    • http://tplustech.com/images/ckeditor/files/ladibosajewokizo.pdfIn PDF document text
    • https://gccpay.net/wp-content/plugins/super-forms/uploads/php/files/20ed9aceb81eb8b4938dfaf66cac171b/70495641217.pdfIn PDF document text
    • https://invision.buzyhub.com/files/petoronufa.pdfIn PDF document text
    • http://xn--hy1bt45apoap01a.net/jangheung/userfiles/file/zagozu.pdfIn PDF document text
    • https://eastoncn.housemember.com/uploads/files/66022761179.pdfIn PDF document text
    • https://lee-trading.tw/archive/upload/files/gonubibalut.pdfIn PDF document text
    • https://sevsport.info/wp-content/plugins/super-forms/uploads/php/files/c02f0d193e866df6e357f5b42aa9ca59/nebanaveke.pdfIn PDF document text
    • https://lrsinc.co/userfiles/file/sagot.pdfIn PDF document text
    • http://gandolfiarchitetti.com/userfiles/files/29067241166.pdfIn PDF document text
    • http://ministryofrum.com/memlogos/file/zojotilotizimunevulejele.pdfIn PDF document text
    • https://landbondcorten.com/attachment/file/1e5aa0d1d56734c69118f8f236b1ce46.pdfIn PDF document text
    • https://bselink.com/userfiles/file/10910204355.pdfIn PDF document text
    • https://fuze-pay.com/ckfinder/userfiles/files/64785488146.pdfIn PDF document text
    • http://azstorestudio.com/uploads/files/83679375373.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=gloud+hack+mod+apkPDF link annotation
    • 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_off0000da09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA09 10316 bytes
SHA-256: 4571d7c565ba8c97f0fec17cd6717af872ecd89b881c116f187448cbfb7b3fe2
font_01_sfnt_off0000f146.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF146 18824 bytes
SHA-256: d07d6a5eb340df4c5653b07c35c1b9c811f185243c0b94b24056c7f222f32a7a
font_02_sfnt_off000122a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122A9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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