PDF malware analysis — malicious · dfb441e57713736a

MALICIOUS

PDF

101.3 KB Created: 2021-07-04 10:19:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26

MD5: 78ba68a41fa1f2a77c62d441c3ee4027 SHA-1: 5fbf0ae4b1e8ee9d177af0fca5d8b2a78a99669b SHA-256: dfb441e57713736a59f2b27e81b5664f4870c5e202a58c1bac1b067be9683ff4

124 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The file was detected as a malicious PDF by ClamAV, specifically flagged as Pdf.Phishing.Trojan. Heuristic analysis revealed it functions as a link farm, with numerous URLs pointing to compromised WordPress sites. These links likely serve as redirects to phishing or malware distribution sites, aligning with a spearphishing attachment attack pattern.

Machine Learning

Nyx PDF Classifier suspicious score 0.2938

Heuristics 5

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
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.veronicaneal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/16085031c8523b---vonigu.pdf In PDF document text
- http://caratow.eu/userfiles/file/2193411349.pdfIn PDF document text
- http://chagatea.ru/wp-content/plugins/super-forms/uploads/php/files/dcf25dd48f74db3ab548744d330d3d26/85764269535.pdfIn PDF document text
- http://bronia.org/userfiles/file/putinodubemifozava.pdfIn PDF document text
- https://www.vedaaz.com/wp-content/plugins/super-forms/uploads/php/files/ebc6e102e328ccb55a0b5b7d03a04001/fesigezazinubezeletive.pdfIn PDF document text
- http://www.moyekolodin.com/files/bofezugezim.pdfIn PDF document text
- https://afriqueitnews.com/wp-content/plugins/super-forms/uploads/php/files/b9278c5645cc0f040729c317eedb687d/vamar.pdfIn PDF document text
- http://ttlengenharia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160d9511285db2---76551510776.pdfIn PDF document text
- https://virker-ikke.dk/files/7151491950.pdfIn PDF document text
- http://qca.ch/userfiles/file/39284232895.pdfIn PDF document text
- https://www.webhisto.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160a1c763de9c4---mijadojefuguxa.pdfIn PDF document text
- http://www.skupp.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160c799184bd2b---60472800401.pdfIn PDF document text
- https://relleno-acidohialuronico.com/wp-content/plugins/super-forms/uploads/php/files/60aa9728d5e33acefbc08143ec543e60/54115073771.pdfIn PDF document text
- http://nuraski.pl/wsg/userfiles/toragubuwugaj.pdfIn PDF document text
- http://copelandreunionla.com/clients/6/66/66f6f3de7053633686652f51c4c00696/File/39542606379.pdfIn PDF document text
- http://thedewakohchang.com/image/upload/File/amejodif.pdfIn PDF document text
- http://footstepfloor.com/upfiles/files/solebuwametuziw.pdfIn PDF document text
- https://ecobox.eng.br/wp-content/plugins/super-forms/uploads/php/files/o9rum1hgslqibupdtk7h7u3s25/15001969564.pdfIn PDF document text
- http://fine-cottage.ru/userfiles/files/sudugexu.pdfIn PDF document text
- https://cms.blauraum.com/wp-content/plugins/super-forms/uploads/php/files/3de439d73608975c5798938933e2bbdd/77151645031.pdfIn PDF document text
- http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/28116dd06b6ade4284f66af9f3553029/89744620989.pdfIn PDF document text
- https://smsenerji.com/resimler/files/2561004915.pdfIn PDF document text
- https://www.sacproblemleri.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079ed94d7acc---20602265806.pdfIn PDF document text
- http://glenbardwest1965.com/clients/0/00/000b938fadf99fc3242526d4297efebf/File/76010974693.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=act+thought+defusionPDF link annotation
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00015ba7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x15BA7	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off000173be.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x173BE	10528 bytes
SHA-256: `007be6d293e3ab345fe635da3799e9202f321eabb748077f524796c3bed4b073`

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