PDF malware analysis — malicious · ca3264d2793e49a7

MALICIOUS

PDF

84.2 KB Created: 2021-04-09 12:23:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20

MD5: 855c14e6a9eefb5e88b8784915ee17c8 SHA-1: 207a02ef09ac3226ce55703c6f66f23f4bc4b6da SHA-256: ca3264d2793e49a722c0ae6d2ad19dfca3e59ef73454ee36472699b2a6cafde2

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The document contains a large number of embedded URLs, many pointing to disposable domains, suggesting a link farm or phishing lure. The presence of PDF_SEO_DISPOSABLE_LINK_FARM heuristic further supports this, indicating the document is designed to redirect users to external sites. No scripts were extracted, but the overall structure and URL distribution strongly suggest a phishing or malware distribution campaign.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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://maypoin.ru/strik?utm_term=marlin+model+60+custom+parts PDF link annotation
- https://cdn-cms.f-static.net/uploads/4375339/normal_5fd67e19c2000.pdfIn PDF document text
- http://canlisohbetim.net/cortisone_injection_in_back_of_shoulderzcl54.pdfIn PDF document text
- http://rukozhop-guide.com/kenmore_chest_freezer_model_253_manualqiz2d.pdfIn PDF document text
- http://pl50off.info/factories_act_1948_book_free_download49b0e.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4464869/normal_606e909262667.pdfIn PDF document text
- https://likuwiwekadu.weebly.com/uploads/1/3/1/8/131857000/aee2f80d.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4450878/normal_5fcd3d94419dc.pdfIn PDF document text
- http://shopmzm.site/jizepiwegukanimakugwssnm.pdfIn PDF document text
- https://rejileju.weebly.com/uploads/1/3/4/3/134335231/wimarodis_lekanetu.pdfIn PDF document text
- http://helpverifedbadges.com/emerson_jumbo_universal_remote_control_codes0pw02.pdfIn PDF document text
- http://marketeuro.pro/namokab1aqfj.pdfIn PDF document text
- http://filfex.ru/74260246115lpzo.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4489241/normal_5fe28d4cb7b0c.pdfIn PDF document text
- https://fuxusololozo.weebly.com/uploads/1/3/1/3/131380606/9836512.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://uploads.strikinglycdn.com/files/61d74886-fe90-4637-9c1f-fbffbcdd14d3/what_makes_someone_serious.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/5d1e32fd-b4b2-4fdf-a71f-a4f49e01b3d9/8073147142.pdfIn PDF document text
- https://5a060084-92f5-4e09-b02e-bbac8bb45871.filesusr.com/ugd/05c943_0cca3aa6dfee4d39b543b991ee966814.pdf?index=trueIn PDF document text
- https://e57d8632-f742-4524-ada6-9cdf759d9f13.filesusr.com/ugd/b0cb2d_73bb40c08d964827b4af28784ab53954.pdf?index=trueIn PDF document text
- https://67bb8873-ca08-4da4-87c0-60a8072ebff6.filesusr.com/ugd/a838c0_52f37554425e41329184bc2244b1cfcc.pdf?index=trueIn PDF document text
- https://2863666b-9d79-467d-9aad-9eeb6dafbdf2.filesusr.com/ugd/6ee3eb_6ef7d5b46c7247e5a94952a4f18ff392.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_off0000fbc5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFBC5	5400 bytes
SHA-256: `73da09e177711046587fc8256ed73048ce36998caa51600019d36b65f27c3134`
`font_01_sfnt_off00010dfe.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10DFE	11416 bytes
SHA-256: `80c56af15cfbad6bb55b971205c31dc6a85855c35b6db2e0e5648d9a4956cb8b`
`font_02_sfnt_off000134ee.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x134EE	4324 bytes
SHA-256: `cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34`

Open this report in the interactive analyzer, or submit your own file for analysis.