PDF malware analysis — malicious · 143ff7690560771a

MALICIOUS

PDF

86.6 KB Created: 2021-08-17 08:17:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24

MD5: dbb9bbb24cd2a09b9f495c9edf2381dd SHA-1: db81b656e4eaa613a807be32d77de4274ffdaae5 SHA-256: 143ff7690560771a3bba11186a553b9970e6847b7f06b5097af96d5d704e5665

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating it is likely a phishing or malware distribution lure. It functions as a link farm, containing numerous embedded URLs that point to compromised websites, potentially serving as a distribution point for further malicious content. The heuristic firings suggest the PDF is designed to host a large number of links on disposable or compromised hosting, increasing the likelihood of user engagement with malicious sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9912

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 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
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 https://nomylo.ru/uplcv?utm_term=how+can+i+improve+my+sales+skills PDF link annotation
- http://juniorsmagazine.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073e298d05e8---wuzederigomixatige.pdfIn PDF document text
- http://pulsrmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/16097042062247---vanapuporazuzaluzetadalug.pdfIn PDF document text
- https://lescourailleurs.com/upload/editor/file/56462464480.pdfIn PDF document text
- http://aggengr.com/uploads/CMS/file/32019630832.pdfIn PDF document text
- https://extremetour74.ru/wp-content/plugins/super-forms/uploads/php/files/a61244eccedf5590e950ee02dce93628/fipunijupakame.pdfIn PDF document text
- https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/185b00012f6bd6012ec1f6c985570073/xelomewiz.pdfIn PDF document text
- http://hhsbluebirds1967.com/clients/b/b5/b592d679e9980e62d9d56be1bfb8b6b6/File/wugixupoxasar.pdfIn PDF document text
- http://tzoetemondje.be/uploads/files/12025423422.pdfIn PDF document text
- https://genesisbehaviorcenter.com/wp-content/plugins/super-forms/uploads/php/files/ed35a0e91ad3aa5e56043215e62226de/62137921656.pdfIn PDF document text
- https://zegaoyun.com/calisma2/files/uploads/92805134609.pdfIn PDF document text
- https://makemycake.gr/wp-content/plugins/super-forms/uploads/php/files/202mkmdae1uo9hl1gmofh2pert/kidefolabugaba.pdfIn PDF document text
- http://aiswaryamatrimonials.com/fck_uploads/file/66947722340.pdfIn PDF document text
- https://sancarspune.com/wp-content/plugins/super-forms/uploads/php/files/d70af3bfda28cb361d2a9b335b78b8a7/fawusurafovozemilateluje.pdfIn PDF document text
- http://www.norestim.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16115896fadd91---xawuw.pdfIn PDF document text
- https://provisionsinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610c986d7fbc9---11422023394.pdfIn PDF document text
- http://dom-nenilovo.ru/wp-content/plugins/super-forms/uploads/php/files/ef562c28ef6ae719755a41a9d7fc4f74/43573677271.pdfIn PDF document text
- http://theydeserveastamp.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608f392d61617---wojifuvozoxupatobubiderow.pdfIn PDF document text
- http://bamt.be/wp-content/plugins/formcraft/file-upload/server/content/files/1608255684b74b---4577473590.pdfIn PDF document text
- http://kaplanpm.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ad1ef473c0---falalafowivibixowolitili.pdfIn PDF document text
- http://alternatifmedikal.com/img/userfiles/files/bekutod.pdfIn PDF document text
- http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606c8cc6c2c31---40091755090.pdfIn PDF document text
- http://augustaelectricalwork.com/editorData/file/8201458165.pdfIn PDF document text
- https://chptravel.ir/data/file/10099816161.pdfIn PDF document text
- http://visualpaint.com/wp-content/plugins/formcraft/file-upload/server/content/files/160727bf421d8a---migatoravaxulobipudol.pdfIn PDF document text
- http://zabradli-znerezu.cz/userfiles/file/givukusavi.pdfIn PDF document text
- http://gzcil.com/uploadfile/files/56702209072.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In 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_off0000ee2f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEE2F	17308 bytes
SHA-256: `2fd271f843f58720ba93ba85d424d9cd4a9656b611fd457f5b4dafa070682be4`
`font_01_sfnt_off00011b88.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11B88	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off0001339f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1339F	10788 bytes
SHA-256: `fe2bd88798e5ece9fa07a80075e5422c9ae866985f578b72c075a2d496506f69`

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