PDF malware analysis — malicious · fdd84bc5236ab6a4

MALICIOUS

PDF

65.4 KB Created: 2021-09-28 21:16:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23

MD5: 8b18818fb8fb1bc04d06977130ab99ae SHA-1: d0a80f23239b4d9e64af63f39400aab38210bf17 SHA-256: fdd84bc5236ab6a4dd69beeff89716e650eedaa363f9e7b7f73c821e75ddbc10

124 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF file contains a large number of embedded links, many of which point to domains that appear to be part of a link farm or hosted on compromised infrastructure. The ClamAV detection as 'Pdf.Phishing.Trojan' strongly suggests a phishing or malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing lure designed to redirect users to malicious sites.

Machine Learning

Nyx PDF Classifier suspicious score 0.4949

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 https://allytemp.ru/uplcv?utm_term=how+to+get+xray+mod+in+minecraft PDF link annotation
- http://hyeminshop.com/DATA/files/39210607645.pdfIn PDF document text
- http://fulepmark.hu/nyebu/fulepmark/userfiles/file/30647303427.pdfIn PDF document text
- https://seedomoretravel.com/files/files/76703253198.pdfIn PDF document text
- https://testgit.begurholidays.com/uploads/userfiles/files/31906936795.pdfIn PDF document text
- http://lnv-cnc.com/userfiles/file/pewijetogutukidifiwewiziv.pdfIn PDF document text
- https://praktijk.zorglink.nl/ckfinder/userfiles/files/90353557576.pdfIn PDF document text
- http://naim.naparts.com/images/fck/file/59735771346.pdfIn PDF document text
- http://farmaciafasolis.eu/userfiles/files/zijamevibomupetaxemiz.pdfIn PDF document text
- http://www.nanodrywash.com/wp-content/plugins/formcraft/file-upload/server/content/files/161445e0075b2c---81156228139.pdfIn PDF document text
- https://castilloexterior.org/ckfinder/userfiles/files/zageremebipirapiburive.pdfIn PDF document text
- http://greensquares.in/userfiles/file///30840702570.pdfIn PDF document text
- http://krindustria.com.br/site/wp-content/plugins/formcraft/file-upload/server/content/files/161373b2562cd1---vuzenubebenitoruliladebik.pdfIn PDF document text
- http://pmrs.ps/userfiles/file/nuravazodubovejizelopo.pdfIn PDF document text
- http://parvazyab.net/basefile/api203/files/19157562213.pdfIn PDF document text
- http://deleersnijder-bocaege.be/images/file/sejoken.pdfIn PDF document text
- https://claphamjunction.com.au/wp-content/plugins/super-forms/uploads/php/files/4ac37376fbc50b5b1ff60ead347b2579/68197300050.pdfIn PDF document text
- http://coomargroup.com/ckfinder/userfiles/files/samalav.pdfIn PDF document text
- https://trsoftyazilim.com/genelresimler/file/fikuj.pdfIn PDF document text
- https://halobysciton.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c92920ca17---20845722364.pdfIn PDF document text
- https://moyaexpresss.com/ckfinder/userfiles/files/11902981830.pdfIn PDF document text
- https://jackinthegym.com/uploads/files/202109171508415809.pdfIn PDF document text
- http://kossuthdigisuli.hu/userfiles/file/38359855521.pdfIn PDF document text
- http://splogservice.ru/content/file/80793614444.pdfIn PDF document text
- http://eis-pieschel.de/UserFiles/File/41298177761.pdfIn PDF document text
- http://aqs-group.it/userfiles/files/67160874275.pdfIn 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_off0000b088.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB088	10900 bytes
SHA-256: `537ac865645dae116885a32d80ef875b1313ff3545609ada5c5306192d4df90e`
`font_01_sfnt_off0000c994.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC994	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off0000e1a6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE1A6	15948 bytes
SHA-256: `70acc15214b168f33689630a6f44741e627d2d1365842b4233545f4ff8f221fc`

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