PDF malware analysis — malicious · d1be39f253f5f5f3

MALICIOUS

PDF

104.9 KB Created: 2021-05-28 07:16:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21

MD5: 4cbdf3858e2196580ccceea8ec39bddd SHA-1: 10173e45ebfdb01b55534fea44114407560041f1 SHA-256: d1be39f253f5f5f3465f40e62cc83652efe73857611e3bf91f8b5bef04d3327d

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous external links, a common tactic for phishing or directing users to malicious sites. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of links, suggesting an attempt to generate traffic or distribute content. ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious intent. While no scripts were explicitly extracted, the presence of external links and the phishing heuristic strongly suggest a malicious document.

Machine Learning

Nyx PDF Classifier malicious score 0.9975

Heuristics 5

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

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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://gimoguvi.ru/strik?utm_term=case+ih+2188+service+manual+pdf PDF link annotation
- https://lotigasi.weebly.com/uploads/1/3/4/7/134705720/c6f8e55239.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4445532/normal_60512c7a6be2f.pdfIn PDF document text
- https://gumopokexu.weebly.com/uploads/1/3/0/8/130814161/0e65edbddf5.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4408346/normal_6065b163464ef.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4484807/normal_60266378686cb.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4475847/normal_606041c152b1f.pdfIn PDF document text
- https://nabutamu.weebly.com/uploads/1/3/4/5/134525390/garatoxadi-vixapawirop-gumuwiw.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368504/normal_60111fd8ca982.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4477651/normal_6031ed55875cd.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4374188/normal_600f4e37b58b4.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4454054/normal_5fd99180cd4f5.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4420459/normal_5ffd1c1ad8679.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4476275/normal_60476ced7f990.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4473938/normal_60066f3c50bdf.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4385620/normal_5fe594214ccfb.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4367290/normal_5fe11aafdf436.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4445750/normal_5fe004fa45d66.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4380528/normal_605c8f8bba168.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4379370/normal_604fed35b7f31.pdfIn PDF document text
- https://kunobile.weebly.com/uploads/1/3/4/5/134517695/1776304.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4378149/normal_605d6c078557f.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4469630/normal_602e85aedec6b.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/f379a30c-50a8-400c-9ad1-0cdc5636ccf6/aa_step_4_questions.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/d9f30a71-0e13-461f-b269-fbe38a7aa9d3/75270013081.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c07a7c0b-f1f5-4fc7-bc24-2e0ae8ffe3fa/lexus_es_300h_hybrid_model_year_2019.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/182272d5-01d1-4436-931b-d25ecf3ad32f/samsung_galaxy_s5_active_battery_life.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e0e6c825-94ce-4560-acf9-f2f44c9005bd/how_to_make_outro_in_intro_maker.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_off00015ce7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x15CE7	5736 bytes
SHA-256: `e03fff1d37ef6102ee215d2a8f5116ced10da7abd055aff30d76610021fc6cc5`
`font_01_sfnt_off00017054.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x17054	11096 bytes
SHA-256: `69befb938ffabc6eada5f56039ac93e0a3a9e329664f05fb0dc4891a75e0f6ab`

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