PDF malware analysis — malicious · 12123485af51c09d

MALICIOUS

PDF

87.3 KB Created: 2021-07-30 23:30:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14

MD5: 03a4aa61819665c30ce4456428eb1b70 SHA-1: cce4d687a1f23513c4a95c460298ddeea981b080 SHA-256: 12123485af51c09dc694c8079efeaceff81df500baa69d7bbe11b5441a870e43

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The file functions as a link farm, containing numerous URLs pointing to compromised CMS uploads and disposable hosting domains. These links likely lead to phishing pages or further malware downloads, indicating a malicious intent to deceive users.

Machine Learning

Nyx PDF Classifier malicious score 0.9976

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://marinaxaraes.com.br/ckfinder/userfiles/files/nudapalimebakuzejo.pdf In PDF document text
- https://observatoire-omic.org/documents/file/libovezijemefuvepoz.pdfIn PDF document text
- https://aliencosmicexpo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607dd005678b4---49473847987.pdfIn PDF document text
- http://lifeisartfoundation.org/sites/default/files/images/userfiles/file/kerelavidizewix.pdfIn PDF document text
- http://trackeg.com/en/wp-content/plugins/formcraft/file-upload/server/content/files/160dfdbd161e20---53430839848.pdfIn PDF document text
- http://herve-coiffure.ci/files/32703175597.pdfIn PDF document text
- https://thedestinbeachhouses.com/wp-content/plugins/super-forms/uploads/php/files/9425c4c434809dae549375022dfacd02/tidiwag.pdfIn PDF document text
- http://gonuldoviz.com/upload/ckfinder/files/81742101057.pdfIn PDF document text
- https://dazzlin.co.uk/wp-content/plugins/super-forms/uploads/php/files/ed44fd7a88f0c652d67bd46374674d7e/78890252546.pdfIn PDF document text
- http://qianlong99.org/ckfinder/userfiles/files/3587299863.pdfIn PDF document text
- http://foire-fromages-et-vins.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a72126253c5---vipabovixolikekojejiwu.pdfIn PDF document text
- http://blissworldbeauty.com/newerac2c/userfiles/file/70741828261.pdfIn PDF document text
- https://zweiund40.com/wp-content/plugins/super-forms/uploads/php/files/emg4p4ide7maf5ocrgaem4bd70/6716890937.pdfIn PDF document text
- http://www.primalegal.eu/wp-content/plugins/super-forms/uploads/php/files/8r81v5kbqu8bt05mu5nr2p0t44/botapevogajibaf.pdfIn PDF document text
- http://www.canadiantreasurer.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f6c71d077c9---39948407743.pdfIn PDF document text
- https://grafitpoint.ru/wp-content/plugins/super-forms/uploads/php/files/125a2f4f16c6800b9f5b17aefc53196f/mofevosepafovolefe.pdfIn PDF document text
- http://www.shipsupply.co.mz/wp-content/plugins/formcraft/file-upload/server/content/files/160a2a2d08198b---67564759210.pdfIn PDF document text
- https://dcmheavyequipment.com/admin/images/file/sexedawoximudizututisa.pdfIn PDF document text
- http://hidra.it/ckfinder/userfiles/files/rowewiliziwofawubuje.pdfIn PDF document text
- https://www.burit.net/wp-content/plugins/formcraft/file-upload/server/content/files/160adad3b9461d---kiwizijuvanojikeraxixoxig.pdfIn PDF document text
- https://amalighting.com/wp-content/plugins/super-forms/uploads/php/files/aa01f9a19ba886fc049e5cca3de13ce7/sufabazagolulegogobipusi.pdfIn PDF document text
- https://cwlighting.com/wp-content/plugins/super-forms/uploads/php/files/86f0daba621007f6fe07a5c2434034f8/7090052152.pdfIn PDF document text
- http://soundreaming.org/wp-content/plugins/super-forms/uploads/php/files/e83df52ea85cfc78468dec370ff3a462/lidupudigo.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=how+to+process+deed+of+sale+for+landPDF 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_off0000f222.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF222	10600 bytes
SHA-256: `352faa810a5fd7fcd810d4f944d37bc5d4c062c7d88d9e1d1018d6ea76565eb0`
`font_01_sfnt_off00010a86.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10A86	16708 bytes
SHA-256: `93c8a1ba08c1297e380f26ce5a6fae6808c67612b7bb6637d16536a3c877000d`
`font_02_sfnt_off000135c7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x135C7	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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