PDF malware analysis — malicious · 8abf50482af38609

MALICIOUS

PDF

76.1 KB Created: 2020-12-23 14:04:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17

MD5: cffa498eb8704ae39a90521f09954834 SHA-1: dc772de1a45030098afedf3dbc382f15ea167d57 SHA-256: 8abf50482af386090e7cf35bfddc88620fa56d676be1b136bbdd0164293d5e00

186 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file is identified as malicious by multiple heuristics and a machine learning classifier. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing operation. The embedded content, though heavily obfuscated, appears to be a lure for movie downloads, which is a common tactic for distributing malware or leading users to phishing sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

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://trafffe.ru/strik?utm_term=mummy+returns+full+movie+in+tamil+dubbed PDF link annotation
- https://momigetufi.weebly.com/uploads/1/3/4/8/134876151/3101063.pdfIn PDF document text
- https://lerofiputa.weebly.com/uploads/1/3/4/3/134367001/2d113.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4486367/normal_5fac5f033b714.pdfIn PDF document text
- https://tuwunujanopir.weebly.com/uploads/1/3/4/6/134617400/d70bb6c60.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4416490/normal_5f94ce8abdd29.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4373511/normal_5f8c0b9d5e193.pdfIn PDF document text
- https://sudororurupe.weebly.com/uploads/1/3/4/6/134602833/1294441.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4449622/normal_5f9e7caa700a7.pdfIn PDF document text
- https://zozufawagizawag.weebly.com/uploads/1/3/4/4/134454621/kobuvizufula.pdfIn PDF document text
- https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/4041939.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368991/normal_5fd7dce68e054.pdfIn PDF document text
- https://fejamelaluboj.weebly.com/uploads/1/3/4/3/134311679/gupibabo.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4382620/normal_5fc1732321cd8.pdfIn PDF document text
- https://vekerarefatada.weebly.com/uploads/1/3/4/8/134868636/kutetoxiworuwif.pdfIn PDF document text
- https://zewemoledomuro.weebly.com/uploads/1/3/4/7/134746436/4764599.pdfIn PDF document text
- https://malinozibide.weebly.com/uploads/1/3/4/3/134380659/kijose_falapeserepojuw_vejigibopole.pdfIn PDF document text
- https://rakonudiboxenej.weebly.com/uploads/1/3/4/8/134874851/8645598.pdfIn PDF document text
- https://gidutuzewefira.weebly.com/uploads/1/3/1/3/131380066/tiragofufis.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4419192/normal_5fd62a4f656fa.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.opentle.orgIn 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://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000c891.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC891	5360 bytes
SHA-256: `5a925071446f1434b8f8e8e403b346de11f32aae9501fe95b78632cca8c4080b`
`font_01_sfnt_off0000dabf.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDABF	10744 bytes
SHA-256: `ec3da46c446ad91ba147c92793aa88ea3d059dcb0a7a221be5560df53bfd27bc`
`font_02_sfnt_off0000f972.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF972	12248 bytes
SHA-256: `54d3eae68b59e6be078e4f004b2c8eaa02b613aeced7973ef6bec27db2fed127`

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