PDF malware analysis — malicious · 300f06a34e7787c5

MALICIOUS

PDF

89.6 KB Created: 2021-09-09 17:46:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16

MD5: 2ee984622a05e3740d291532fa69e4d5 SHA-1: 4ffa671c7e70b382d9a788010e7a3793dbda538a SHA-256: 300f06a34e7787c5aed45a584f8797915204d6672f97c970360166e20d3b266f

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many of which are part of a link farm on disposable hosting, suggesting a phishing or malware distribution scheme. The PDF structure and embedded content, while obfuscated, are consistent with attempts to redirect users to malicious sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9913

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
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 https://huntic.ru/uplcv?utm_term=watch+10+things+i+hate+about+you PDF link annotation
- http://justsayhi365.com/uploads/file/53706322892.pdfIn PDF document text
- http://ore-processing.ru/d/files/69469351995.pdfIn PDF document text
- http://yuseigachi.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16130bf20a9165---gefekisitobiwapasefejo.pdfIn PDF document text
- https://zoomkish.com/basefile/zoomkishcom/files/rawiboxanupifox.pdfIn PDF document text
- http://aksaaydinlatma.com/img/editor/image/file/rozen.pdfIn PDF document text
- http://rfinshaat.az/userfiles/file/66177456187.pdfIn PDF document text
- https://forumhrdbekasi.com/webroot/userfiles/files/zawivumumizafevebipute.pdfIn PDF document text
- http://homeshopeez.com/uploaded_files/userfiles/files/jonewelokuturisogulidupar.pdfIn PDF document text
- https://keluargamimpi.com/contents/files/35723115799.pdfIn PDF document text
- https://sasalidayanisma.org/uploads/file/rejiviw.pdfIn PDF document text
- https://siam-royal-view.ru/data/files/femipogopu.pdfIn PDF document text
- https://canevastoilestjean.com/upload/editor/file/raxonawubinefup.pdfIn PDF document text
- https://andrejc.si/files/file/dojasudujibenokagekim.pdfIn PDF document text
- http://aitrans.cn/UploadFile/file/F1202109092047539927.pdfIn PDF document text
- http://www.museopizarra.com/ckfinder/userfiles/files/80718836896.pdfIn PDF document text
- http://fuyu.010bi.com/ckfinder/userfiles/files/wupifi.pdfIn PDF document text
- http://dataction.org/demo/dataction/media/raxezosozosukona.pdfIn PDF document text
- http://ivepe-elearning.gr/assets/UserFiles/mainHome/file/winuwu.pdfIn PDF document text
- https://lexcochoralsoc.org/demo/lccs/beta/userfiles/files/gawebajekakobixoxuretuge.pdfIn PDF document text
- http://baozhaopharm.com/upload/files/51763407241.pdfIn PDF document text
- http://veiligheidssloten.nl/ckfinder/userfiles/files/tajunejerojojirozupenosi.pdfIn PDF document text
- https://www.mclarenpress.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613744ab5900c---lezixaraf.pdfIn PDF document text
- http://enricobarraco.com/files/42017075038.pdfIn PDF document text
- http://brava-ekb.ru/userfiles/file/nejupusemevaxem.pdfIn PDF document text
- http://execdentalclinic.com/uploads/ckfinder/userfiles/files/63079819879.pdfIn PDF document text
- https://gtijsr.com/userfiles/file/fejijofogetonafinimagu.pdfIn PDF document text
- 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_off0000f6c0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF6C0	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off00010ed7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10ED7	10884 bytes
SHA-256: `cbefff10d5370fb47a822e6c064343d4734174d1d09a803501d2c05505cb1516`
`font_02_sfnt_off0001281a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1281A	18716 bytes
SHA-256: `5a74c8bae637e6892b31c732f812ee2f0329931daff680e1650900b8d97aeeef`

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