PDF malware analysis — malicious · 83d8604396ac0ed0

MALICIOUS

PDF

90.5 KB Created: 2021-07-01 22:49:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26

MD5: 77d7725b18d2dfe6f7d771bd51b785cb SHA-1: 8051bc773d53a790431401961ad788af021d4fc4 SHA-256: 83d8604396ac0ed0b999387837f5162751c6df1efb0e820d1f01a9c159d8b275

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous links pointing to compromised WordPress sites, indicating a phishing or redirection attempt. The ClamAV detection and ML classifier strongly suggest malicious intent, likely to lure users to malicious content or downloads. The document body is unreadable, but the heuristic findings and numerous URLs confirm the attack pattern.

Machine Learning

Nyx PDF Classifier malicious score 0.9932

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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://stpetejazz.com/wp-content/plugins/super-forms/uploads/php/files/gifq9ibk8222k522ef1ejo1s3s/83667259355.pdf In PDF document text
- https://pluckywize.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c797404db9a---9935888411.pdfIn PDF document text
- http://ambvetfanini.eu/userfiles/files/7680586827.pdfIn PDF document text
- http://www.canadiantreasurer.com/wp-content/plugins/formcraft/file-upload/server/content/files/160743de62e7f7---lepagojabojafuwuligig.pdfIn PDF document text
- http://www.marsagri.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607295225c5b6---19573250975.pdfIn PDF document text
- https://glass-haus.ru/wp-content/plugins/super-forms/uploads/php/files/e3bb7b884ea71778134afdb3201f3861/45945787168.pdfIn PDF document text
- https://greenfuturevietnam.com/Upload/files/67854688923.pdfIn PDF document text
- http://praconsulgroup.ru/pict/file/zarirowipef.pdfIn PDF document text
- https://argekaucuk.com/nbg/upload/files/15243687817.pdfIn PDF document text
- http://soundreaming.org/wp-content/plugins/super-forms/uploads/php/files/77266f9524c67e799e1a9ae0b53937df/ketijogefab.pdfIn PDF document text
- http://dohertylaw.net/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/bilun.pdfIn PDF document text
- https://debcopharma.com/userfiles/file/10937994172.pdfIn PDF document text
- http://www.lentilles-progressives.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160799305aec8a---97415230714.pdfIn PDF document text
- https://fietenhaardenenkachels.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160986ccabbf99---lelafulizejoretudojuzo.pdfIn PDF document text
- https://seroinstitute.com/wp-content/plugins/super-forms/uploads/php/files/2912f9a91c58746682357c1a9f80d304/sebuzumunud.pdfIn PDF document text
- https://ashleymongolia.mn/uploads/files/41638746506.pdfIn PDF document text
- https://gpuhub.net/wp-content/plugins/super-forms/uploads/php/files/0sdoteb627ri0jlv9apthmk35b/nakurunuvareludu.pdfIn PDF document text
- https://www.geosuiteonline.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607d220e25c59---61725762274.pdfIn PDF document text
- https://alamansyria.com/userfiles/file/pemase.pdfIn PDF document text
- https://hogies.com/includes/template/uploads/file/87702322990.pdfIn PDF document text
- https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160a33c54906a0---1601510409.pdfIn PDF document text
- https://yourlightingbrand.com/wp-content/plugins/super-forms/uploads/php/files/2c8cd8dc9134d3bef984a6bd57a63bef/27187358360.pdfIn PDF document text
- https://glasschneider.koeln/wp-content/plugins/super-forms/uploads/php/files/q03ev91fvqujknoo4qivg9p3k2/rubixevuvadixomejewipa.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=the+sum+of+three+numbers+in+an+ap+is+12PDF link annotation
- 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_off0000e3eb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE3EB	18520 bytes
SHA-256: `7a6e26a9a63d7597e18b7fde10e0f99368f0f7fcd532a8b8cc77e7286efe596d`
`font_01_sfnt_off0001155e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1155E	10952 bytes
SHA-256: `b89c09ffd8bda7ade92c27ad1e3702f1222c615a3b21f6ce0e573da5f0b10627`
`font_02_sfnt_off00012e77.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12E77	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_03_sfnt_off00014688.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x14688	16156 bytes
SHA-256: `15bdb3869d8d4458aad361551f68459b5691bbaf699be9bec01cb82de0a2cecd`

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