Malicious PDF — malware analysis report

Static analysis result for SHA-256 d46ee46f100f8f51…

MALICIOUS

PDF

80.7 KB Created: 2021-09-22 09:31:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 1afb5d06eb0efba0a11ade84359ed3d2 SHA-1: 378deb98ae3f7923198eb4025a2169c26a4d441e SHA-256: d46ee46f100f8f51db37111e24ef5d0adc5747a3fdbfe4ab5c014409209abdb8
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link farm pointing to multiple domains, many of which are hosted on compromised CMS uploads or disposable hosting, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The document body is unreadable due to encoding, but the presence of numerous external links and the 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic confirm the attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9917

Heuristics 6

  • 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.
  • 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://hertzlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/86414086293.pdf In PDF document text
    • http://thesei.com/In PDF document text
    • http://yachtales.net/admin/userfiles/files/zesis.pdfIn PDF document text
    • https://xn----7sbabak5acz7byau.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/782c77de199d5c08406b33a80cbf1a26/968270561.pdfIn PDF document text
    • http://halongbaycruises.org/upload/files/gopodojuki.pdfIn PDF document text
    • http://esistore.de/userfiles/file/fagidalavatunirobasil.pdfIn PDF document text
    • https://dolnoslaskialarmsmogowy.pl/imgturysta/files/nemaberobonojibolilumowam.pdfIn PDF document text
    • http://cuadepthanglong.com/images/ckeditor/files/tosolurodofi.pdfIn PDF document text
    • http://ljhalls.com/wp-content/plugins/super-forms/uploads/php/files/85c83c04f78133570dd7a1ab5283da67/11417817073.pdfIn PDF document text
    • http://www.bash.cl/media/file/34455045411.pdfIn PDF document text
    • http://idroter.org/userfiles/files/dexatogezojireti.pdfIn PDF document text
    • http://marinda.ru/pics/images/file/zegomiredisa.pdfIn PDF document text
    • https://calienglish.com/ckfinder/images_store/files/61881892205.pdfIn PDF document text
    • http://alfatreyd-mebel.ru/archive/images/file/91950486767.pdfIn PDF document text
    • http://orthodoxvaidikasanghom.org/userfiles/file/supimobidavovezolonuwuso.pdfIn PDF document text
    • http://www.parinet.fi/tiedostot/files/forawal.pdfIn PDF document text
    • http://ydchem.cn/filespath/files/20210909065444.pdfIn PDF document text
    • https://www.beadvised.co.uk/wp-content/plugins/super-forms/uploads/php/files/c8576fc77820810e3d18e095ef2adb06/32534764969.pdfIn PDF document text
    • http://iwayman.com/uploadfiles/file/210907000049440575og64ga.pdfIn PDF document text
    • http://purepoem.com/resource/docContentImg/file/2021-09-20/95dceee6b63cb8c8b1017a79754e9447.pdfIn PDF document text
    • https://humantouchtranslations.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/16144439d3b4f1---29034957790.pdfIn PDF document text
    • http://yotlist.com/uniformkontakt/userfiles/image/files/8610715512.pdfIn PDF document text
    • http://studioprogettoarchitettura.eu/userfiles/files/dotiroxalurizoxa.pdfIn PDF document text
    • https://vernadoc.com/wp-content/plugins/super-forms/uploads/php/files/b91090214192cd1f27657c4ad4e5740a/5569628855.pdfIn PDF document text
    • http://museodegliarazzimarsala.com/userfiles/files/94547129195.pdfIn PDF document text
    • https://www.stock2morrow.com/ckfinder/userfiles/files/kubumevedadinuwugilozid.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=unfortunately+help+startup+has+stoppedPDF 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_off0000d6ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6EA 10724 bytes
SHA-256: a497ce49f013bcbded2661e72885e4a2bf3f0f95feb024efd70cefe478143dba
font_01_sfnt_off0000ef88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF88 17608 bytes
SHA-256: 2427d46183ac73d881d7e9e35750fc782fb6ff643924d6b91f8c0d2c2d24857b
font_02_sfnt_off00011c9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C9A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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