PDF malware analysis — malicious · 42912c24ee4b476c

MALICIOUS

PDF

88.5 KB Created: 2021-08-09 09:20:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16

MD5: c0effbab4350336bc2ca2feb1e73bd7d SHA-1: ffe9d44a9efde319d446d5c2303e7ee941a91de5 SHA-256: 42912c24ee4b476c4afee5a481a80196ddc15ad339dfe8726f239007a9046edb

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The sample is identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a link farm. It contains numerous external URIs pointing to compromised WordPress uploads and other disposable hosting, suggesting an attempt to lure users to malicious or phishing content. The PDF structure itself is not directly executing code but serves as a deceptive gateway to external resources.

Machine Learning

Nyx PDF Classifier malicious score 0.9940

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://pistant.ru/uplcv?utm_term=grim+soul+survival+cheats+2019 PDF link annotation
- https://leonardscopysystems.com/home/leonards/public_html/ckfinder/userfiles/files/zosotugoxakulo.pdfIn PDF document text
- https://controlcert.se/wp-content/plugins/formcraft/file-upload/server/content/files/1606c83363a2ee---rumomuxonevigopa.pdfIn PDF document text
- https://www.coconutlodge.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c91d81d405---xorarapifetexoxiwukuf.pdfIn PDF document text
- https://bokseinstituttet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1609e43cd79a5f---xalewasojefu.pdfIn PDF document text
- https://rjiminfra.com/wp-content/plugins/super-forms/uploads/php/files/b911440dfd283d576d452f5a72b6b536/29539432759.pdfIn PDF document text
- http://itineraire-consulting.com/ckfinder/userfiles/files/fevepapafexa.pdfIn PDF document text
- http://rilta.net/userfiles/files/77384225542.pdfIn PDF document text
- https://advancedcheckcashadvance.com/wp-content/plugins/formcraft/file-upload/server/content/files/160851a1d2e6a3---tukaposokewalebokozate.pdfIn PDF document text
- https://vivaldiroberto.com/img/files/mediafiles/file/diwede.pdfIn PDF document text
- http://ziepniekkalns.lv/wp-content/plugins/formcraft/file-upload/server/content/files/160b90dc18c49e---gipulexezos.pdfIn PDF document text
- http://taskentcompany.com/userfiles/file/69428938081.pdfIn PDF document text
- http://euro-ex.com/68044911123.pdfIn PDF document text
- http://amandatravel.com/userfiles/file/3916193890.pdfIn PDF document text
- https://telenovella-bg.com/files/kelakozi.pdfIn PDF document text
- http://nnk.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160a11493a53e1---vijakukizadarud.pdfIn PDF document text
- http://nnk.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1609e5be00bafc---pumixegiwukagawataraneg.pdfIn PDF document text
- http://yournamebadges.com/withyourdog/cms_uploads/file/jeforewulen.pdfIn PDF document text
- https://www.golddustdental.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075a660d2b5e---29444836171.pdfIn PDF document text
- http://kennyre.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d949fbbaf71---fakolopuborewajatotam.pdfIn PDF document text
- https://didacostruzioni.it/userfiles/file/zulaxokufiwali.pdfIn PDF document text
- https://heykidsletscook.info/wp-content/plugins/super-forms/uploads/php/files/2753169b18ce2ecd5303ecf61fbb533e/1567422364.pdfIn PDF document text
- https://levin-dent.ru/wp-content/plugins/super-forms/uploads/php/files/a9a6a01e49a3d7848920e28e633a0b74/8009925912.pdfIn PDF document text
- https://www.kadinlarsitesi.org/wp-content/plugins/formcraft/file-upload/server/content/files/16078e42d48d68---5051273734.pdfIn PDF document text
- http://www.zulfugar.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1606f4f10cfc56---timinopotu.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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e688.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE688	11060 bytes
SHA-256: `7259e08553ce953ba64d8eb2806495656fe3ab56f679f0efd106e1335caf9c40`
`font_01_sfnt_off0001007a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1007A	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off0001188c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1188C	18100 bytes
SHA-256: `8db944bcaa7724187df1c1640bdb1b0055b7eb8933c6a628f10964a91354a969`
`font_03_sfnt_off000146a0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x146A0	2812 bytes
SHA-256: `d2bc25028ba6ed82d013f47d140a369da1003fb2d2c4cd709e15c999d66f27be`

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