PDF malware analysis — malicious · ddeaac6db5298a85

MALICIOUS

PDF

83.0 KB Created: 2021-03-25 00:15:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20

MD5: b9a37f4713b94382b1c0cba277c87c86 SHA-1: 7324bf2485058ad0b8104a4b3e4b9ba0cbaa1826 SHA-256: ddeaac6db5298a855e3f27866e8b5d2f453cffa11f2d208e27e3ca6886a3f6da

186 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many pointing to disposable hosting, suggesting it functions as a link farm designed to redirect users to potentially harmful websites. The presence of embedded URLs and the PDF_SEO_LINK_FARM heuristic further support this attack pattern.

Machine Learning

Nyx PDF Classifier malicious score 0.9983

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.
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://mezovuduw.ru/wix?keyword=mmd+motion+to+unity PDF link annotation
- https://static.s123-cdn-static.com/uploads/4502920/normal_5ff92f337ba87.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4488322/normal_602cb482ef99a.pdfIn PDF document text
- https://cdn.sqhk.co/kafufojugure/hgcgee8/national_geographic_subscription_10.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4450907/normal_603fd506bb02b.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4393345/normal_5fe7067270ebd.pdfIn PDF document text
- http://revujutipisan.22web.org/18706060041.pdfIn PDF document text
- http://xarubuxa.iblogger.org/walezanomirezava.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4483837/normal_5fc5c9127a4f0.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4418984/normal_60264bf266d68.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4462974/normal_600e5a6a62bd9.pdfIn PDF document text
- https://cdn.sqhk.co/bureruverog/hiAjbji/41372621987.pdfIn PDF document text
- https://cdn.sqhk.co/jawubibegeba/U6tMkJs/mini_camera_drone_price_in_bd.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4462708/normal_5fd5f181af6a1.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4479433/normal_6004029d48e8b.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://4a7d9d2b-1d67-446c-8d6d-bdd3043d1f60.filesusr.com/ugd/c3d078_a1048280a2074e0f8e5bd568895dc37b.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/gagotaniwipure/vokawudowal.pdfIn PDF document text
- https://s3.amazonaws.com/latufenaw/78966943053.pdfIn PDF document text
- https://73a1781f-5c9f-4c76-8a11-a8e8c44f336a.filesusr.com/ugd/d9f7b5_a2471da8cb684a7bb5ddb472b171e437.pdf?index=trueIn PDF document text
- https://13a7c488-548c-4b48-b567-d2b0b9a3e1de.filesusr.com/ugd/85d67f_a35ec757bb03450a9485d74af8f8fa95.pdf?index=trueIn PDF document text
- https://313cea95-bd78-4864-9d9d-3b26c3bbe0bd.filesusr.com/ugd/2142af_f1e1b0decc7b4e2d9526f03fd097b75e.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/tidigudetefumof/unconfirmed_report_en_espanol.pdfIn PDF document text
- http://wegatanubuguze.rf.gd/how_many_calories_are_in_a_grilled_chicken_burrito.pdfIn PDF document text
- https://s3.amazonaws.com/xotomisen/29560468013.pdfIn PDF document text
- https://s3.amazonaws.com/sowewazulejewi/kekonujolujutopuwuw.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e917.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE917	2912 bytes
SHA-256: `1baa3efd180cf5f44d613abe34ea0380c2d25dd221f4ef864ac418d56f73cc35`
`font_01_sfnt_off0000f373.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF373	4560 bytes
SHA-256: `d6cd6d3dbedae823ebce7fc9d6d3d281897c86e4c22bb9c22ea477ee79ae5883`
`font_02_sfnt_off000102f9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x102F9	11200 bytes
SHA-256: `49479a9d37358c57756005d9f79d27b28ae2adadfcbeacb2bbe4fda0759a555c`
`font_03_sfnt_off000129a2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x129A2	16036 bytes
SHA-256: `35d3440dae1ebc896564e4e6f70ea95aa3a30a1ac603c7fffbb21b68b8b72e2f`

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