PDF malware analysis — malicious · 10fb5f06df079d9b

MALICIOUS

PDF

83.2 KB Created: 2021-08-09 00:02:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11

MD5: c192f426c8ef23af89ca1f06375ab5ae SHA-1: b555eaa761c881e0239c9974e286eea89a295dc3 SHA-256: 10fb5f06df079d9b4bdc0177f180e04f5c8b4f4ce3b331d6719867f77f948ff0

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was identified as malicious by multiple heuristics and a machine learning classifier, with ClamAV detecting it as a phishing trojan. The document functions as a link farm, containing numerous external URLs that point to various websites, including those hosted on compromised WordPress installations. These links are likely intended to lure users into phishing scams or to download further malicious content.

Machine Learning

Nyx PDF Classifier malicious score 0.8430

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://philabc.ru/uplcv?utm_term=church+hymn+what+a+fellowship+lyrics PDF link annotation
- https://carlojans.com/cms/file/bumarigujigabulumarodixo.pdfIn PDF document text
- http://ohappy.org/userData/board/file/saguzazadasavabajubij.pdfIn PDF document text
- https://betonwerkendejonge.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16091afce3bb78---gibujejogiruzeburejujubut.pdfIn PDF document text
- https://www.nobleorthodontic.com/wp-content/plugins/super-forms/uploads/php/files/a7c5bec974c62ee8dd559b33d6944710/majamenuximuvepuwilisa.pdfIn PDF document text
- https://k9-warrior.com/wp-content/plugins/super-forms/uploads/php/files/m2q7bgf215t2q7gkdonkbkcspb/funevesojose.pdfIn PDF document text
- http://wypelnienia.kratex.pl/wp-content/plugins/super-forms/uploads/php/files/f39d4f43f7925652647194eca069df00/18597242971.pdfIn PDF document text
- https://readxyz.org/wp-content/plugins/super-forms/uploads/php/files/1243656e85ad73bed4de321d06a4b228/muminijisojuwukadumuta.pdfIn PDF document text
- https://levin-dent.ru/wp-content/plugins/super-forms/uploads/php/files/9188b4d959c0db5681ec2511d3d7730d/dupowerokupuziput.pdfIn PDF document text
- https://sg-design.top/wp-content/plugins/super-forms/uploads/php/files/5e93ff3ee14644bd3d6a44e7450104be/9127100229.pdfIn PDF document text
- https://www.espymetcalf.com/wp-content/plugins/formcraft/file-upload/server/content/files/160944c30e3a63---ganizepitik.pdfIn PDF document text
- https://mides.vn/images/ckeditor/files/zumezerobulex.pdfIn PDF document text
- https://smgbid.com/ckfinder_userfiles/files/suxetunoxigumikufexesutix.pdfIn PDF document text
- https://valergences.fr/userfiles/file/56610544749.pdfIn PDF document text
- https://yorapp.it/file/febuzitexamosonu.pdfIn PDF document text
- http://carszana.com/image/upload/File/jisesufubikowu.pdfIn PDF document text
- http://artospace.com/pics/file/wefezadarurirumu.pdfIn PDF document text
- https://unitedcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085584bdf513---majesixare.pdfIn PDF document text
- http://srsheicha.com/uploadfile/file/2628089168.pdfIn PDF document text
- http://kapalishakti.com/ckfinder/userfiles/files/mugonewuwidi.pdfIn PDF document text
- http://heilpraxis-pankow.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bdf160d829c---xumamujimixeluwifopad.pdfIn PDF document text
- http://viettranslators.com/webroot/img/files/44291320271.pdfIn PDF document text
- https://kawanmto.com/contents//files/xorovixikirukago.pdfIn PDF document text
- http://grupopiscis.com/upload/files/ruvepizonezufe.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_off0000e7ea.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE7EA	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000fffc.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFFFC	17960 bytes
SHA-256: `1abfe0f1082ce92a98966b58c13cb6fe0370f505528c4fc0be4922bce727a0dd`
`font_02_sfnt_off00012e26.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12E26	11076 bytes
SHA-256: `8464a4fa78c8227fa0d26fb252677f367bcc6f2bd45bca263649bfea1288b694`

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