PDF malware analysis — malicious · 0b95809346634b61

MALICIOUS

PDF

79.2 KB Created: 2021-03-23 00:53:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10

MD5: eb2692c82f99a69344ce6ba657f125b6 SHA-1: 55988c7882114aa43c3d6a2bdc682e05ec6ea42e SHA-256: 0b95809346634b616e1e5094a9fc086fd38dc3a8b96d188096cabe088a8f0471

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous external links, identified as a link farm, directing users to various websites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to redirect users to potentially harmful content.

Machine Learning

Nyx PDF Classifier malicious score 0.9961

Heuristics 5

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.
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/award?keyword=agency+theory+in+corporate+governance+pdf PDF link annotation
- https://dumaxenuwumav.weebly.com/uploads/1/3/3/9/133997891/1032009.pdfIn PDF document text
- https://duketexu.weebly.com/uploads/1/3/4/7/134725944/xalokiditik-firipulibevu.pdfIn PDF document text
- https://cdn.sqhk.co/mogizilo/7gfsoic/tubbr_personal_social_network_by_invitation_code.pdfIn PDF document text
- https://cdn.sqhk.co/mepetiruzi/QgffmaN/55969404044.pdfIn PDF document text
- https://cdn.sqhk.co/genizataxom/0gjXCEN/fresh_remix_fid_q_diamond.pdfIn PDF document text
- https://cdn.sqhk.co/budatumibowu/hciigjj/32403068116.pdfIn PDF document text
- https://cdn.sqhk.co/xelajuwodaf/cj45jgY/43175785709.pdfIn PDF document text
- https://nemaxololele.weebly.com/uploads/1/3/5/3/135304154/f8d361db34f4.pdfIn PDF document text
- https://cdn.sqhk.co/rixakowu/gjZfgjc/bubble_tea_kit.pdfIn PDF document text
- https://gogovujogizog.weebly.com/uploads/1/3/1/6/131607278/witozugikuge.pdfIn PDF document text
- https://rugexivik.weebly.com/uploads/1/3/1/0/131070765/jiguramunexuvimiwuwo.pdfIn PDF document text
- https://cdn.sqhk.co/gogerazina/WgfnYif/gewugodudepubuvejexip.pdfIn PDF document text
- https://cdn.sqhk.co/jimavidozeze/ihDjfmj/hiddo_superhero_tycoon_codes_2019.pdfIn PDF document text
- https://cdn.sqhk.co/wadalibituge/nnwidjg/cara_membeli_pulsa_telkomsel_lewat_m_banking_bca.pdfIn PDF document text
- https://cdn.sqhk.co/jowowibow/jdjejcS/gartner_incident_response_platform.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/jivuxo/line_6_ux2_install.pdfIn PDF document text
- https://s3.amazonaws.com/kubafezin/android_10_update_for_samsung_a8_plus.pdfIn PDF document text
- https://44f68060-d5e3-4d58-b4e7-e3760392f352.filesusr.com/ugd/49488e_5c30c6ec379b497ca891737117a85bbd.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/jolunenafobuw/vosanidowugew.pdfIn PDF document text
- https://s3.amazonaws.com/sumesawoxajew/68417337036.pdfIn PDF document text
- https://s3.amazonaws.com/serogajugomiji/polarization_index_for_transformer.pdfIn PDF document text
- https://504706c9-3a86-45eb-876a-6494ef133fff.filesusr.com/ugd/80c1db_70ee773e996b4409bbf8a155b535714b.pdf?index=trueIn PDF document text
- https://33b7cf8b-1cb2-46d9-9063-17e97cba5e80.filesusr.com/ugd/9edd50_d8c05af59f444e788f87b50a922d3f02.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/gopifu/3d_printing_problems_guide.pdfIn PDF document text
- https://521a9f5b-5c7e-4f25-a9e4-5446fb1b1975.filesusr.com/ugd/c1a494_640b0bba5920445a829e919b07a21edd.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/venunamazozuzo/91938744759.pdfIn PDF document text
- https://s3.amazonaws.com/tirimofufemukat/its_a_wonderful_day_gif.pdfIn PDF document text
- https://s3.amazonaws.com/folexapurilowe/84300835243.pdfIn PDF document text
- https://s3.amazonaws.com/megodipewukitoj/5619799075.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_off0000f643.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF643	5360 bytes
SHA-256: `9220f801950d1654de3128f0bed80a9d6b0baaf1c08e83bcf60e70b01ab4c574`
`font_01_sfnt_off0001088f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1088F	11236 bytes
SHA-256: `83c22a605fb6b11ba756ab3323626bb26555c4a345628ebd608eb0dc6aec5eb8`

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