PDF malware analysis — malicious · fe6e985fd3bddf68

MALICIOUS

PDF

85.2 KB Created: 2021-07-19 15:29:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23

MD5: 6a892f6a29930c36b2f708fb69ab87f7 SHA-1: 5770ec3eaf54277e7be9104192a3040caf77b7ab SHA-256: fe6e985fd3bddf68a96b4e7c82a3a2f28fae954c3c7ba38d374196a867359387

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains a link farm pointing to compromised WordPress upload directories, suggesting an attempt to host malicious content. The presence of numerous links on potentially disposable hosting further supports a malicious intent, likely for phishing or malware distribution.

Machine Learning

Nyx PDF Classifier malicious score 0.9860

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://www.benvenutialmare.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac0344074e7---wolatexodimepevi.pdf In PDF document text
- https://facades-metal.ch/ckfinder/userfiles/files/fubunikafoba.pdfIn PDF document text
- https://lorenzonimmigrationlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b3551598e6---zinogowirozamunodonumom.pdfIn PDF document text
- http://jar-ted.pl/file/90244096534.pdfIn PDF document text
- http://degrossier.nl/uploads/file/72209526759.pdfIn PDF document text
- https://www.clubmanizales.com.co/wp-content/plugins/formcraft/file-upload/server/content/files/160b9f5e935d69---xamelopuxijopiwemo.pdfIn PDF document text
- https://prikolnaya.com/wp-content/plugins/super-forms/uploads/php/files/fd0688bba3a58247b88a5a53d0ed857b/solixur.pdfIn PDF document text
- https://sancarspune.com/wp-content/plugins/super-forms/uploads/php/files/5275ee810e72ee0502168868d4c5001e/numamonukoxo.pdfIn PDF document text
- https://ecomassage.pt/wp-content/plugins/super-forms/uploads/php/files/pcbv5h5dck375dhto6qlij7op7/37891333958.pdfIn PDF document text
- http://aceonlinementors.com/userfiles/file/3568311023.pdfIn PDF document text
- https://mimpishio2.net/contents//files/63705991019.pdfIn PDF document text
- http://ecbpolska.pl/wp-content/plugins/super-forms/uploads/php/files/3c165661196e6a25091d973a462fe58b/bofodukominoman.pdfIn PDF document text
- https://www.traveltimevipp.com/wp-content/plugins/super-forms/uploads/php/files/4b62719a6f8a66f1984d827fd2b293b5/petakefadebuk.pdfIn PDF document text
- http://lichnyiybrand.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1607286791be86---jajunorelemew.pdfIn PDF document text
- http://lyzebrno.cz/userfiles/file/6469958195.pdfIn PDF document text
- https://www.ergunaygoren.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fbda3a6efc---mafinosuwatusimogute.pdfIn PDF document text
- http://sattamatkapatti.com/userfiles/file/likebipimolujikefifaf.pdfIn PDF document text
- http://edu-family72.ru/content/images/uploads/file/pomowatifezixudenonu.pdfIn PDF document text
- https://ethiquedevelopers.com/wp-content/plugins/super-forms/uploads/php/files/5c420417eb67e70067486866413d9b3f/motoda.pdfIn PDF document text
- https://1877painters.com/FCKeditor/file/30615894374.pdfIn PDF document text
- https://anmoul.com/userfiles/file/37012280379.pdfIn PDF document text
- https://www.scanworld.se/wp-content/plugins/formcraft/file-upload/server/content/files/160761cd77f4e0---66307517031.pdfIn PDF document text
- https://bykevin.com/wp-content/plugins/super-forms/uploads/php/files/d5939362ac74df351fa856f7a1079e13/wusibefudagitivugamov.pdfIn PDF document text
- https://www.electriclighting.com/wp-content/plugins/super-forms/uploads/php/files/4294a330ca7a78514b68ff6c2adba97c/74221507647.pdfIn PDF document text
- http://tipsclubcr.com/campannas/file/73561348298.pdfIn PDF document text
- http://www.garriagricola.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a489db57dd9---2946646043.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=hibernate+mapping+examplePDF 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_off0000ebd1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEBD1	16852 bytes
SHA-256: `7da5fb69ebd5f83194c1afe526d34923f3aaf9c6fc0999d8da1774024297a4d3`
`font_01_sfnt_off000117e1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x117E1	10540 bytes
SHA-256: `09417be3e545982392583fae83a9bbc3a81da503b04a763c9cb1314974f03c7d`
`font_02_sfnt_off00012f97.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12F97	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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