PDF malware analysis — malicious · dcc73defc8111b15

MALICIOUS

PDF

76.8 KB Created: 2021-10-01 11:59:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-21

MD5: 12e36dc48350a4de99bcc3d58bc1ed04 SHA-1: 6edd75f683ec711e556102e4570295960032af31 SHA-256: dcc73defc8111b155538d7838d55ff46c71ad5ba27c1949124592e9443caac88

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1055.012 Process Injection

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many pointing to compromised CMS uploads and disposable hosting, suggesting a link farm designed to obscure the final destination. The primary purpose appears to be directing users to external, potentially harmful content.

Machine Learning

Nyx PDF Classifier malicious score 0.9907

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://heyumpnd.com/userfiles/file///ritijixenupukegexoze.pdf In PDF document text
- http://ke-sen.com/userfiles/file/1632617199.pdfIn PDF document text
- https://naveenent.com/administrator/imagetemp/file/72060478507.pdfIn PDF document text
- https://12tiga.com/contents/files/dagoxigesavalado.pdfIn PDF document text
- https://mission4recruitment.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615180bc699c3---34952514823.pdfIn PDF document text
- http://www.chinahkcarplate.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d6b1c5882c---takujebezarumama.pdfIn PDF document text
- http://betheaskssd.com/flash/betheaskssd.com/file/jikosop.pdfIn PDF document text
- http://jysfh.com/upload_fck/file/2021-9-1/20210901081038484431.pdfIn PDF document text
- https://h16hr15k-h19hr37urn.com/contents/files/82519684107.pdfIn PDF document text
- http://mtsp.by/userfiles/files/50568912518.pdfIn PDF document text
- https://mrdak.cc/uploadfile/files/nolikajepegedul.pdfIn PDF document text
- http://micronforgacsolo.hu/UserFiles/file/gotebi.pdfIn PDF document text
- http://doggystylzgrooming.com/admin/photos/file/25525755058.pdfIn PDF document text
- https://textolinguisticsolutions.com/upload/editor/file/71946967945.pdfIn PDF document text
- http://aalzkj.love-mrt.com/upload/files/9799157191.pdfIn PDF document text
- http://jilienjrubin.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/vigozesowofuvevi.pdfIn PDF document text
- http://secondhandgraphics.com/usrfiles/file/60333380410.pdfIn PDF document text
- http://istihdamhaberleri.com/upload/ckfinder/files/67003463411.pdfIn PDF document text
- https://rewaqousha.net/userfiles/files/22716756585.pdfIn PDF document text
- http://himalayakebab.com/shipinc/userfiles/files/28319876117.pdfIn PDF document text
- https://areshin.ru/wp-content/plugins/super-forms/uploads/php/files/d921c614c283e265ed89d0f4cc8b6830/juparexuxasepi.pdfIn PDF document text
- https://weekendtripskolkata.com/userfiles/file/fupuxenomidagutej.pdfIn PDF document text
- https://triptoboloyfoundation.org/editorsfiles/files/bojiwirifow.pdfIn PDF document text
- http://elitvorota.ru/f/file/zetevoxujibisimusepika.pdfIn PDF document text
- https://excore.hu/ckfinder/userfiles/files/wivitososapetoguzotop.pdfIn PDF document text
- http://cosmikkino.ru/sadm_files/zafelixedosuvur.pdfIn PDF document text
- https://smarttactic.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1614b4ce2b2a29---68468721033.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=granny+lesbian+moviesPDF 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_off0000c1b9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC1B9	10528 bytes
SHA-256: `6c1673495c54017f8fc5f3b3c200a70486e448200f189cc7e119688270537df8`
`font_01_sfnt_off0000d9b6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD9B6	19040 bytes
SHA-256: `70912bfbe4cc351bc6921e92ca4f4920c72275581e1834f300701e93426d91a9`
`font_02_sfnt_off00010bce.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10BCE	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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