PDF malware analysis — malicious · 384c459a0cd6c972

MALICIOUS

PDF

78.4 KB Created: 2021-05-24 11:50:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27

MD5: a24ed6963e10f0bc6762c3f383b9ff74 SHA-1: dd5d034dfa9f461921f9a4b424af1c59e9e9ddd0 SHA-256: 384c459a0cd6c9722ef4a90db302db4b382ce2c19d6f835cf8439b718652495b

164 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, many of which are likely part of a link farm designed to direct users to malicious content. The presence of a 'download' button lure further supports a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery.

Machine Learning

Nyx PDF Classifier malicious score 0.9964

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
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.
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://dugedepap.ru/strik?utm_term=slugterra+slug+it+out+mod+apk+unlimited+gems PDF link annotation
- https://cdn-cms.f-static.net/uploads/4366976/normal_5fd182665b336.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4464314/normal_5fe5628e90b20.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4378613/normal_60532b8481296.pdfIn PDF document text
- https://tuzulenoj.weebly.com/uploads/1/3/4/8/134866727/b5736bc9f.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4413966/normal_603b13bccb1c1.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4404122/normal_5fcf3f13581ed.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4502567/normal_601da7c47422c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4495691/normal_5fd337abf3ed3.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4412768/normal_6058c5a117bae.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4453134/normal_6046cd9628ef1.pdfIn PDF document text
- https://pomulopegodetom.weebly.com/uploads/1/3/1/3/131384256/ladazunexodade_pafizifivuf.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4373248/normal_5fcd5fed96196.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4392195/normal_5ff9c2ebbeb6e.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4419413/normal_5fe8b815aa872.pdfIn PDF document text
- https://rofekituluz.weebly.com/uploads/1/3/2/3/132303072/vitivixoj.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4476443/normal_60567fe0f211d.pdfIn PDF document text
- https://kevotimobamos.weebly.com/uploads/1/3/1/6/131636762/voxiravivakek_jatoxu_vikemek_sinapekasigur.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4473616/normal_5ff675550ec41.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4404113/normal_6036c933ea32f.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/tisegovofu/amanotes_apk_pure.pdfIn PDF document text
- https://s3.amazonaws.com/wunojipu/informante_sinonimo_significado.pdfIn PDF document text
- https://s3.amazonaws.com/wutogugej/java_calculator_app.pdfIn PDF document text
- https://s3.amazonaws.com/nazekisigiduz/anonymous_wallpaper_apkpure.pdfIn PDF document text
- https://s3.amazonaws.com/bisute/sakuwitunubavedini.pdfIn PDF document text
- https://s3.amazonaws.com/vonusirukete/building_own_iot_platform.pdfIn PDF document text
- https://s3.amazonaws.com/tamobalasu/cub_scout_bear_den_leader_guide_2018.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000f3de.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF3DE	5444 bytes
SHA-256: `78bc512a92cd960de15ee7e3c6080fb266da7e2ca328afcc3291760177f3bda6`
`font_01_sfnt_off0001064b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1064B	10904 bytes
SHA-256: `36e07d15112eab1124a5e1f9cd74e3aa7a920948c9697e8e98d2dd603a644074`

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