PDF malware analysis — malicious · 1f69596e0351fec8

MALICIOUS

PDF

73.5 KB Created: 2021-09-21 15:05:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23

MD5: 36d07d29a3b0f62d75bff346316914e4 SHA-1: 9a987605612e5afaf39366037e2680540d36823c SHA-256: 1f69596e0351fec82fdf2b346085deba096670db07d78f74a846a04d72ae21d9

166 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links, many of which point to external websites, with a high-confidence heuristic indicating a link farm on disposable hosting. ClamAV also detected the file as Pdf.Phishing.Trojan. The presence of multiple external links suggests an attempt to redirect the user to malicious content or downloads, aligning with phishing and trojan delivery tactics.

Machine Learning

Nyx PDF Classifier malicious score 0.9892

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 to algorithmically-generated URL high PDF_RANDOM_URL_LINK

PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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://swapnakoodu.com/fck_uploads/file/dizegaginulel.pdf In PDF document text
- https://webshopplus.nl/app/webroot/files/userfiles/files/87042597158.pdfIn PDF document text
- http://bajkolandia-leszno.pl/userfiles/file/makimef.pdfIn PDF document text
- https://unitedcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613ee878a923c---sobaniketosojudibataxu.pdfIn PDF document text
- http://dubilex.com/userfiles/files/vabebegisoka.pdfIn PDF document text
- https://penal-garazh.ru/files/87691395672.pdfIn PDF document text
- https://samsungklimalar.com/upload/ckfinder/files/97513092807.pdfIn PDF document text
- https://samsungdvmklima.com/upload/ckfinder/files/vufukomidogitan.pdfIn PDF document text
- https://jobtiara.com/files/files/53836363217.pdfIn PDF document text
- http://randygordonlawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/difexubarekubegorebom.pdfIn PDF document text
- https://brs.jo/userfiles/files/25708626517.pdfIn PDF document text
- http://vizit-k.net/uploads/editor/files/xoxefekusa.pdfIn PDF document text
- http://marketingnews.fr/images/file/pirezofubop.pdfIn PDF document text
- https://dursunguney.com/userfiles/files/52483474836.pdfIn PDF document text
- http://kibunajcc.com/ckfinder/userfiles/files/84849302502.pdfIn PDF document text
- http://bikipvuikhoedep.com/app/webroot/files/editor_upload/files/13105432296.pdfIn PDF document text
- https://pakistanchristiancongress.org/userfiles/file/jebonaragexikanefosika.pdfIn PDF document text
- http://dylogistics.com/userData/board/file/xuzor.pdfIn PDF document text
- https://korzo-galeria.hu/files/file/fokojemakedimunodizofokod.pdfIn PDF document text
- http://bulk-supplies.com/userfiles/files/fesusotezutoxuzi.pdfIn PDF document text
- https://vieclamlaocai.vn/webroot/img/files/magev.pdfIn PDF document text
- https://readandenjoy.ae/userfiles/files/73303987491.pdfIn PDF document text
- https://floridainvestment.cz/files/file/kejupemopafujifof.pdfIn PDF document text
- http://ambulatorioveterinarioilghirlandaio.it/userfiles/files/mogoxiburowitutixe.pdfIn PDF document text
- https://ichibaninfotech.com/ckfinder/userfiles/files/rumaminuj.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=gta+sa+cheater+2.3+apk+free+downloadPDF link annotation
- 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_off0000bf9c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xBF9C	11200 bytes
SHA-256: `eebdec5b0187832f82f9fa6f5a0ce3714778556a0c1843e8a5de3647a87a1553`
`font_01_sfnt_off0000d9fd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD9FD	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off0000f20f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF20F	17516 bytes
SHA-256: `a7443c3b1408bbdfc085028a8a2ef252997b8138294b1fe01f78cdefc039ceee`

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