PDF malware analysis — malicious · 7396c7b84f57fe63

MALICIOUS

PDF

109.5 KB Created: 2021-05-29 13:53:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14

MD5: 951f1088c27032a69a9a3c77ed572c9d SHA-1: 9e31f1bb8ef728f8d57599eb550bd7d9f9fa9833 SHA-256: 7396c7b84f57fe63fa072f0cfd5cb52e6fca68b07f7cefebe504f29993b0ef94

204 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous external links, with one prominent URL suggesting a download lure. The presence of a 'download button' heuristic and a 'password-protected archive' lure indicates an attempt to trick the user into downloading and potentially decrypting a malicious payload. ClamAV detection and ML classification further support its malicious nature.

Machine Learning

Nyx PDF Classifier malicious score 0.9984

Heuristics 7

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE

Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON

Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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://jacksth.ru/strik?utm_term=bomberman+3ds+cia+download PDF link annotation
- https://cdn-cms.f-static.net/uploads/4481166/normal_6066875dc7c10.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4529893/normal_606a35156bc7a.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4481552/normal_5ff151a1c9f66.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4480591/normal_5fcef3eb1281d.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4416331/normal_60310bfc7955a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4416143/normal_605efbfea5017.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4465263/normal_6030f64fda2a3.pdfIn PDF document text
- https://xojowikenokux.weebly.com/uploads/1/3/4/7/134706662/kedosezanug_wozibiduxedaxo_jobebi_faridarosumufol.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4481667/normal_60415cc04df9d.pdfIn PDF document text
- https://wozaxopuvomu.weebly.com/uploads/1/3/0/7/130740129/jogeg.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4419003/normal_606df54a140cb.pdfIn PDF document text
- https://kisoxorojapaga.weebly.com/uploads/1/3/7/5/137512046/sawak-dakopatazafuxoz.pdfIn PDF document text
- https://gogijufiwadika.weebly.com/uploads/1/3/4/5/134581681/6122223.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4501361/normal_604e60109f1da.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4417662/normal_5fed54c94f995.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.opentle.orgIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://uploads.strikinglycdn.com/files/d60ce8a8-f4b3-41e0-ae94-c9569ba0a92a/27930226582.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/4f313923-bab9-4b1a-bed3-7bf9765d978e/livro_didtico_filosofia_ensino_mdio.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/a2a5346d-9bb6-4da5-b1a4-e1a97ce3aa19/resmed_airmini_change_filter.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3a7884eb-864f-4754-9609-6f0493e161e5/lux_win100-a05_programmable_outlet_thermostat.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/1c727cc4-8148-4b74-8932-b6d119b47f58/ganuvevasoramaneridew.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/2d696d46-fed9-4925-ada3-e2a035497ade/best_anger_management_books_reddit.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://scripts.sil.org/OFLIn PDF document text
- http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000f464.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF464	28448 bytes
SHA-256: `3b62da3bf80c57b1299c01891cd799c9984edf4a3558de073202799a72e7f031`
`font_01_sfnt_off00014e87.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x14E87	5236 bytes
SHA-256: `7222bb3cbc0ce2d9894256ac701045c2b39b93cb568af72b4602353031cd2d84`
`font_02_sfnt_off00016026.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x16026	6092 bytes
SHA-256: `465ad3fabc206ffa3f0710ae44084f77225d91cf8905e844a748f352baf867b2`
`font_03_sfnt_off00016ff4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x16FF4	12024 bytes
SHA-256: `9d87873983af736d2c7f68bf8415ac26f322734b18a48e182e0161559d794f09`
`font_04_sfnt_off000197f2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x197F2	4324 bytes
SHA-256: `1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361`

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