PDF malware analysis — malicious · d3bba168df8a1395

MALICIOUS

PDF

77.3 KB Created: 2021-05-28 05:32:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23

MD5: 450384847e1aea537c4f23b44e69ed8a SHA-1: d91cca68fbdc4f14d7f5748afdb91fd83299fb15 SHA-256: d3bba168df8a139566de4104232e9db8da8c2aa82bd156289e02319055308a9d

194 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file exhibits characteristics of a link farm, with numerous embedded URLs pointing to external resources, likely for SEO manipulation or phishing. The ClamAV detection and ML classifier strongly indicate malicious intent, classifying it as a phishing trojan. The presence of a 'download' button lure further supports the malicious workflow.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 7

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.
Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON

Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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://resalured.ru/123?utm_term=battle+dogs+apk+offline PDF link annotation
- https://xanusikufugab.weebly.com/uploads/1/3/4/3/134371049/8183515.pdfIn PDF document text
- https://letalisukom.weebly.com/uploads/1/3/4/3/134316231/worinisobasupu_terevokotor_sapuvuxaputin_kipoxifawogow.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4489257/normal_5fd086452aa37.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4488336/normal_6011986245d9a.pdfIn PDF document text
- https://kuzaloxamuw.weebly.com/uploads/1/3/1/4/131406684/5076f272138705.pdfIn PDF document text
- https://static.s123-cdn-static-d.com/uploads/4416125/normal_60b04a08702ec.pdfIn PDF document text
- https://lusenivusimutom.weebly.com/uploads/1/3/4/8/134887898/zipeparema_sokajuxupaxutip_nuwuje.pdfIn PDF document text
- https://bomovote.weebly.com/uploads/1/3/5/3/135398027/soterojevitenewumu.pdfIn PDF document text
- https://kimidevi.weebly.com/uploads/1/3/4/0/134018720/favojidiwe.pdfIn PDF document text
- https://dabemevabun.weebly.com/uploads/1/3/4/4/134476179/4584871.pdfIn PDF document text
- https://nitipitu.weebly.com/uploads/1/3/0/7/130775162/nuviluvogefusesa.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4426087/normal_601370ebb08f4.pdfIn PDF document text
- https://nelupevono.weebly.com/uploads/1/3/4/3/134305158/dulasajofexuxabu.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4496001/normal_600157318420d.pdfIn PDF document text
- https://sabumamopadav.weebly.com/uploads/1/3/5/9/135957329/701e5d13.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4369648/normal_5feebe54bc334.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/68e2195a-d5bf-47f6-bb26-c3c35b2e7aed/download_zalo_for_mac_air.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/63e1672b-0579-43b3-ba0c-df7746b8d83e/govufebijavofet.pdfIn PDF document text
- https://m.apkpure.com/battle-dogs-In 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_off0000e4c2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE4C2	5228 bytes
SHA-256: `9e9a213c6de2e8a9b425e20aa213d37682c61388c83098339c83591d73211866`
`font_01_sfnt_off0000f6a5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF6A5	1800 bytes
SHA-256: `a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620`
`font_02_sfnt_off0000ff32.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFF32	12836 bytes
SHA-256: `aee1788ce4fbd4170313af29173156a3524081eb7324fdd3f1ed2d803f2d503d`

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