PDF malware analysis — malicious · a2c4f4c8990fca81

MALICIOUS

PDF

67.5 KB Created: 2021-09-30 13:43:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23

MD5: 76cb67e4699faeddad7170ef944b29fd SHA-1: ec792c04d268be621ad019846fcea92ebf7b1f50 SHA-256: a2c4f4c8990fca81e56aca8702e52a8f3d4dc99304752264b80de05e64296f18

146 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The file was detected as a malicious phishing PDF by ClamAV and an ML classifier. It contains numerous embedded URLs, many of which point to disposable domains, suggesting a link farm or phishing lure. The PDF structure and embedded content indicate an attempt to redirect users to external sites, likely for malicious purposes such as credential harvesting or malware distribution.

Machine Learning

Nyx PDF Classifier malicious score 0.9955

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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.
QR-code redirect lure medium SE_QR_LURE

Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
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://www.znackakvality.info/files/tunufuxonifagubi.pdf In PDF document text
- https://spitalmoldovanoua.ro/ckfinder/userfiles/files/parilewoxefalowozar.pdfIn PDF document text
- https://nbretail.com.vn/ckfinder/userfiles/files/19854427089.pdfIn PDF document text
- https://kirbas.com/img/uploaded/file/29448904942.pdfIn PDF document text
- https://impeka.lt/components/com_mijoshop/opencart/image/data/files/kuvuxujiwomilevifubum.pdfIn PDF document text
- https://adeptos.clevercloud.pt/images/items/files/xatugiwa.pdfIn PDF document text
- http://willajarmar.pl/userfiles/file/jinubimexasidilufasukife.pdfIn PDF document text
- http://vpsystem.com/files/fck/nadupi.pdfIn PDF document text
- http://saint-party.com/media/file/83397466371.pdfIn PDF document text
- http://salman-group.com/userfiles/file/bunuxerunominefemer.pdfIn PDF document text
- https://cms.blauraum.com/wp-content/plugins/super-forms/uploads/php/files/1f4e93c9ffdb568a7f70f42e3a9645c2/fuvexeraji.pdfIn PDF document text
- https://thietbixaydungcantho.com/canthomobile2/public/images/sanpham/files/sejare.pdfIn PDF document text
- https://gegeny.hu/uploads/file/8895532070.pdfIn PDF document text
- http://yaqeen-eg.com/userfiles/file/muxofonaruxodifulob.pdfIn PDF document text
- https://trompis-tondschungel.de/userfiles/file/luliromatugulo.pdfIn PDF document text
- http://ct-tci.com/cttax/userfiles/files/32967722910.pdfIn PDF document text
- http://radiosalsa.fr/php/rs/filesupload/file/rubejul.pdfIn PDF document text
- http://cana.vn/uploads/userfiles/file/ziguxezatizerid.pdfIn PDF document text
- http://xn--b1amishc2fb.xn--p1ai/ckfinder/userfiles/files/vojiwusiguledijawifo.pdfIn PDF document text
- http://locthanhwindow.com/img_duhoc/files/fapuzuvozidotuv.pdfIn PDF document text
- https://farsiherbal.com/cache/fck_files/file/wowojefu.pdfIn PDF document text
- https://lightupalife.org.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1614e6f9255398---komubekukifiketujefodu.pdfIn PDF document text
- https://marblobaths.ph/app/webroot/img/files/gagunibog.pdfIn PDF document text
- http://fthyhs.com/resource/docContentImg/file/2021-09-11/912f62bc975b46c2322021abffe0336e.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=law+%26+order+svu+torrentPDF 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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000af62.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xAF62	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000c778.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC778	9280 bytes
SHA-256: `e36a3a271380857fd0ab56c123a777834bc5bad00cce94bc3f1f9932a73d1c0c`
`font_02_sfnt_off0000db0a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDB0A	14772 bytes
SHA-256: `2b3809b54ffbad037ff51d9a5cc917ee44285547b0989410927aae0e97d24eca`

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