PDF malware analysis — malicious · 6e48a3b80d1655ad

MALICIOUS

PDF

72.4 KB Created: 2020-12-18 06:45:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17

MD5: 49fda6e4483b581f79c18e7dacae0913 SHA-1: 932af211d00fbfcb706acd6443556661c0fb1b27 SHA-256: 6e48a3b80d1655ad62c4b19a3e1ae7c0c7d547f508889a5b378be6e42bb86232

244 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 embedded links, many pointing to disposable hosting and redirector infrastructure, suggesting a link farm or SEO manipulation tactic. One critical heuristic identified a link to known malicious redirector infrastructure, and another flagged it as a link farm on disposable hosting. The document body is heavily obfuscated and appears to be non-readable content.

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
PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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.
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://ggtraff.ru/123?utm_term=love+under+the+rainbow+filming+location In PDF document text
- https://rajomewebi.weebly.com/uploads/1/3/4/7/134712267/lulumenuw.pdfIn PDF document text
- https://tepogixe.weebly.com/uploads/1/3/1/4/131437844/xukimulokelanes-vumevafujad.pdfIn PDF document text
- https://juzukixidud.weebly.com/uploads/1/3/4/4/134453884/tofunepifewar.pdfIn PDF document text
- https://dejolezeg.weebly.com/uploads/1/3/2/8/132815968/7603656.pdfIn PDF document text
- https://janirakuvofubej.weebly.com/uploads/1/3/4/7/134734148/4366585.pdfIn PDF document text
- https://sapujufokobifaj.weebly.com/uploads/1/3/4/8/134847621/rubekomanogax-monefososini-lepifab.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4391898/normal_5f8e8ac1f3020.pdfIn PDF document text
- https://woduluzotuni.weebly.com/uploads/1/3/4/3/134373450/budazax.pdfIn PDF document text
- https://wuzajamepoxomis.weebly.com/uploads/1/3/4/0/134096323/2aeb0a8738.pdfIn PDF document text
- https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/5d6f2da.pdfIn PDF document text
- https://ranerenonosojib.weebly.com/uploads/1/3/1/4/131483420/993e6e1843181f.pdfIn PDF document text
- https://sizonijuza.weebly.com/uploads/1/3/4/5/134594560/piwad-vubevawi-baseb.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/b1bce50f-9356-4ea6-a0c9-3a8982a74338/download_manager_apk_for_windows_10.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/901d40cf-482f-4b53-8d2f-84aedaf8a686/77603280586.pdfIn PDF document text
- https://static1.squarespace.com/static/5fc3856e2e34347c7054c27f/t/5fcc291024c49707d3103d39/1607215377166/rekanewulunizogotupok.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000cf39.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCF39	5372 bytes
SHA-256: `40985bed09aa910c8ab82ee8d96cd6531052b75f3b16ad6689264ab876c20484`
`font_01_sfnt_off0000e172.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE172	10780 bytes
SHA-256: `6625e188599841a25c9608ec715e148bb71590f4221e8139e4042091054fbf20`
`font_02_sfnt_off00010658.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10658	4324 bytes
SHA-256: `a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f`

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