PDF malware analysis — malicious · 15ca569cd0077cd3

MALICIOUS

PDF

83.3 KB Created: 2021-03-25 14:18:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02

MD5: 9487247289aa9bf4a586f058244f9945 SHA-1: d0ecb8f2253951726149160d07343baad7035ec3 SHA-256: 15ca569cd0077cd3b9ec4f8a0092b72f3c3a1b47f8f5d72aeacab698f4b6c971

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9990

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://xajibur.ru/wix?keyword=pokemon+hm+chart PDF link annotation
- https://nixixope.weebly.com/uploads/1/3/0/8/130874324/bupavu-xedezijox.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4496378/normal_603f3427e8037.pdfIn PDF document text
- https://daguvosiliwu.weebly.com/uploads/1/3/1/4/131406153/nitoxukusadeguka.pdfIn PDF document text
- https://fofapisobav.weebly.com/uploads/1/3/4/7/134712410/noxamevilus.pdfIn PDF document text
- https://dudegakabiwuzab.weebly.com/uploads/1/3/1/4/131406663/rojod_xirib_vebof_sazuretam.pdfIn PDF document text
- https://gerugufudob.weebly.com/uploads/1/3/4/8/134869234/7a9c3895a401dca.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4420245/normal_5feffbe607299.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/kubafezin/biblia_de_jerusalen_con_paralelos.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/6024fc7a-8815-49a0-94aa-34e41b4e92c7/what_is_an_import_letter_of_credit.pdfIn PDF document text
- https://s3.amazonaws.com/lopeteb/77775238633.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/ef8d1931-2f68-4da9-b3a6-75b56f2306d2/what_does_pagans_mean.pdfIn PDF document text
- https://s3.amazonaws.com/benubapopikaj/88333394984.pdfIn PDF document text
- https://2c8134a4-d865-4da1-8961-c755d7242105.filesusr.com/ugd/6dcf04_7c9462bc183d4db18d0eddcc4cde6f69.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/vigevot/apartment_finder_app_android.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/882e1c74-56f7-458c-b8b0-43779f0cbc1b/25244663037.pdfIn PDF document text
- https://s3.amazonaws.com/lekizopiloref/42374896869.pdfIn PDF document text
- https://s3.amazonaws.com/poresi/collins_spanish_to_english_dictionary.pdfIn PDF document text
- https://3ecb585b-79b8-4502-8567-d9a17299c5c1.filesusr.com/ugd/4b874d_9f16af76ab1047e888df52c64ddd2247.pdf?index=trueIn PDF document text
- https://d497f082-4895-42de-a72c-038d9367c8a3.filesusr.com/ugd/8e727b_eca944e253694e7dbac25dc465ab3899.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/dojivewobasuval/muzica_crestina_ovidiu_liteanu.pdfIn PDF document text
- https://fb9345b8-40be-4608-a8ff-9c5427dba92f.filesusr.com/ugd/98d639_d7479d4ca3764898a82e92b7e297b7fe.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/luborinizu/37744731311.pdfIn PDF document text
- https://s3.amazonaws.com/pevarijidasalop/55142101373.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/bdbaf2f4-d3d1-4c32-ade5-58c475e74706/46629625677.pdfIn PDF document text
- https://ca39a19f-16f9-469f-ab0b-65ec0463b8d0.filesusr.com/ugd/cc9b97_cf0bff97e9c24e178723a3808bb929b5.pdf?index=trueIn 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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000f3d2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF3D2	5988 bytes
SHA-256: `de212f5f74f149727e0a4be134bcca1e7050e14a05f85965d8d52d898f11649a`
`font_01_sfnt_off000108dd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x108DD	4896 bytes
SHA-256: `42cea8a812a01fde4ead2b168f94eade37c8ea2b8f117c1e8fe26e181f2613e8`
`font_02_sfnt_off0001195d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1195D	10872 bytes
SHA-256: `073574f7395388ef087a6d57d355dbf18aec0002a9b9ddf1739530943409a140`

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