PDF malware analysis — malicious · 1bfbb07f385c219f

MALICIOUS

PDF

82.0 KB Created: 2021-05-30 21:27:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13

MD5: 4182fb4daf0e468710adbdd86b0074d1 SHA-1: 69411e767c99fd991f3d37b10c5d0c032d2de76f SHA-256: 1bfbb07f385c219f273bd2c9db8dd3b7965a8a0bed958188189416e0d74ee737

164 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript T1204.002 Malicious Link

The PDF contains embedded JavaScript and a large number of external links, indicating an attempt to redirect the user to malicious content or phishing sites. The heuristic 'PDF_SEO_LINK_FARM' strongly suggests the document's purpose is to generate traffic or distribute malware through a link farm. The presence of ClamAV detection and ML classification further supports its malicious nature.

Machine Learning

Nyx PDF Classifier malicious score 0.9996

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.
Embedded JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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=joey+bada%2524%2524+b4.da.%2524%2524+free+zip+download PDF link annotation
- https://cdn-cms.f-static.net/uploads/4421473/normal_601df49f1e66a.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4384318/normal_600202ee82060.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4381291/normal_60117737b17c3.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4463009/normal_5ff757f6aa3fb.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4449987/normal_601bb2e759bd9.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4417206/normal_6040ed8eadc00.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4402478/normal_6021bffcd25b1.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4461234/normal_6069a195bda10.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4390643/normal_60136edac8412.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366620/normal_605f6981482c9.pdfIn PDF document text
- https://vudewozojaw.weebly.com/uploads/1/3/6/0/136053158/xulos.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4454052/normal_60068d09a6df7.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4371014/normal_601f312289cf5.pdfIn PDF document text
- https://zefojakafi.weebly.com/uploads/1/3/0/7/130776787/vesogume_verexaw_xutenojujal_pagaga.pdfIn PDF document text
- https://gupuvuzuguzi.weebly.com/uploads/1/3/1/3/131379578/lazovuzorufuwimuza.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4383147/normal_6046738de742b.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4464715/normal_5ff99037488eb.pdfIn PDF document text
- https://static.s123-cdn-static-d.com/uploads/4447888/normal_60b3c00148309.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/7bc80f89-be12-49ee-ab0e-1852a50c940b/vaillant_ecotec_plus_637_flue_manual.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/7d5e4917-e323-4587-9e64-3847dc0a93ce/how_to_prepare_for_advent_at_home.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/334f7c42-12ad-4889-b849-5d02cc301b6d/bose_sounddock_portable.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000ecbd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xECBD	5588 bytes
SHA-256: `f0ecc6734d4db369e9d0f7e7b2b3d321afb550bcfb9490526653b86933e49cd0`
`font_01_sfnt_off0001000c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1000C	10888 bytes
SHA-256: `68929fbe79364bdb85afaf5a391e377261ae05b1196dd7055499269c2ad438ac`
`font_02_sfnt_off00012573.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12573	16160 bytes
SHA-256: `7e63eb3bed9c4ceaf47e86587cf77a789dba98dd2b4db382f0c7f052a0aeb8ce`

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