PDF malware analysis — malicious · bd8c99f499f8cc2e

MALICIOUS

PDF

85.9 KB Created: 2021-06-30 23:23:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26

MD5: e8433113de199fe4afe3d85820e83187 SHA-1: 28ec320f37d18167c8f71161c2f2cce3c8267dfe SHA-256: bd8c99f499f8cc2e58fc3dc8f6582f62d010e744a1f3e1615a99a8191f3a3f6d

64 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a link farm with numerous URLs pointing to potentially compromised WordPress sites. These links are likely intended to manipulate search engine results or redirect users to malicious content. The presence of multiple distinct hosts and the use of UTM parameters suggest a coordinated effort for SEO poisoning or traffic redirection.

Machine Learning

Nyx PDF Classifier suspicious score 0.2964

Heuristics 4

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://hanasushipickup.com/uploads/files/supuxazilavolipo.pdf In PDF document text
- https://g-ortho.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160836d67458b9---46951523208.pdfIn PDF document text
- http://www.ncstarim.com.tr/wp-content/plugins/super-forms/uploads/php/files/gmg23i0elktbcc2fj3pqemgse2/todadakafunutesara.pdfIn PDF document text
- https://www.ciabrini-immobilier.com/wp-content/plugins/super-forms/uploads/php/files/808559ib1ijnpfqa64oj62sl4e/fujiwap.pdfIn PDF document text
- http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/6iob4iue10itv8lg8ec6rf3cf6/59837082867.pdfIn PDF document text
- http://parfumerieindex.nl/images/uploads/80478115249.pdfIn PDF document text
- https://directprocessors.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c78fa43300---najitodu.pdfIn PDF document text
- http://ganan10.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160aa3969b8cd9---vazoloxid.pdfIn PDF document text
- http://phillipwhiting.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099d794de536---mixik.pdfIn PDF document text
- https://www.davinci.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1607af1f311d3d---vupalagevomazitezuz.pdfIn PDF document text
- https://www.adilaltinsoy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fa531ba960---zurowuzu.pdfIn PDF document text
- http://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/87ed98a5f60be3c2278d7e4cf0096290/48335438578.pdfIn PDF document text
- http://veterina-hrib.cz/user-uploads/files/lajunu.pdfIn PDF document text
- http://grani-tonkogo-mira.ru/wp-content/plugins/super-forms/uploads/php/files/cd38fa079a1e19664bdd5b57ef7accd1/larujonefupikazonitos.pdfIn PDF document text
- https://aslimitada.com/userfiles/file/3627364380.pdfIn PDF document text
- https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/19013c9b81df6a45d2b4677da5dfc04c/xagefiwumirajinipomufowu.pdfIn PDF document text
- https://choiceenergynetwork.com/wp-content/plugins/super-forms/uploads/php/files/01a0e30a4ee233015d5d077e6024240f/90053858631.pdfIn PDF document text
- https://ovth.ch/userfiles/files/liwiwusow.pdfIn PDF document text
- https://www.dynasil.com/wp-content/plugins/super-forms/uploads/php/files/d5fb130f4e2f6790a0e7c7cef34e10d3/72224661472.pdfIn PDF document text
- http://birnagarcollege.in/userfiles/file/femolemazurasinigisiwes.pdfIn PDF document text
- https://agilitynd.com/wp-content/plugins/super-forms/uploads/php/files/0515a99d014035977a59433fffe9c584/xusexo.pdfIn PDF document text
- https://prsnashville.com/wp-content/plugins/super-forms/uploads/php/files/c748fe3b3fd82657573f02156e2b43c2/59984201912.pdfIn PDF document text
- https://www.ediliziaindustriale.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cb03f4a2d11---9000108502.pdfIn PDF document text
- http://cdmvt.cz/sites/default/files/zalisuxus.pdfIn PDF document text
- https://loskutova.site/wp-content/plugins/super-forms/uploads/php/files/45e0604536d6c2d9de43a31481ef5ff3/98797409213.pdfIn PDF document text
- http://interiorconsignments.com/media/file/12515260656.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=demand+options+in+aggregate+planningPDF 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_off0001019c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1019C	16272 bytes
SHA-256: `a75930a7952d66924e35d4cf8e6ca5cf4e38a6455b51a438acfd18ae9c4eb33b`
`font_01_sfnt_off00012b41.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12B41	10736 bytes
SHA-256: `0c0fb8c7f33699a8d2e0d4622d0ac821a16273061f22a22615cacea87273700c`
`font_02_sfnt_off000143a9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x143A9	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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