PDF malware analysis — malicious · af6da99d46627159

MALICIOUS

PDF

170.6 KB Created: 2021-06-01 01:57:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12

MD5: d02eeed0461e2f0b81e1b94653707a9b SHA-1: 65b9eb064d0549f3e3e5539c7ce75e21c07e9a64 SHA-256: af6da99d46627159dbe165a8cf4b7e7783490725b89f9359e129c2126eb74bec

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous embedded links, with one specifically pointing to a link farm on disposable hosting, suggesting an attempt to redirect users to malicious sites. While no scripts were directly extracted, the PDF structure and embedded URIs strongly suggest an attack pattern involving user redirection for malicious purposes.

Machine Learning

Nyx PDF Classifier malicious score 0.9986

Heuristics 5

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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://huntic.ru/pbw?utm_term=carry+stacker+reloaded+%25E8%25A8%25AD%25E5%25AE%259A PDF link annotation
- https://rexavinuzuna.weebly.com/uploads/1/3/4/3/134308075/sabosomev.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4380890/normal_601c66b8eb83c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4461746/normal_600ba93331b66.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4374211/normal_6017fcdc80fae.pdfIn PDF document text
- https://vimumigejanamim.weebly.com/uploads/1/3/4/6/134619591/remok_vudifu_besokeli_mabegaresuzewif.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4403681/normal_602d1d60bfc2c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4466172/normal_602c2e34d1de3.pdfIn PDF document text
- https://gunulavosaki.weebly.com/uploads/1/3/4/3/134374607/9919314.pdfIn PDF document text
- https://widawukilifuduz.weebly.com/uploads/1/3/5/3/135398171/tujexomo-pumuwimawu-pimutavifejogi-lamodanexamuluj.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4468837/normal_604e19ae533d9.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4458614/normal_6046a21a2653d.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4451567/normal_605c39adbc7a6.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://negovijalulu.pbworks.com/w/file/fetch/144412455/zurudexuvekivojodimone.pdfIn PDF document text
- http://kokoxudalux.pbworks.com/f/bollywood_actress_without_makeup_photos_images.pdfIn PDF document text
- http://palixazoke.pbworks.com/f/dingbats_game_answers_level_133.pdfIn PDF document text
- http://lekuzax.pbworks.com/w/file/fetch/144412215/adobe_photoshop_classroom_in_a_book_2021_release_download.pdfIn PDF document text
- http://nusuwoxub.pbworks.com/f/41787998606.pdfIn PDF document text
- http://jajisaparev.pbworks.com/f/where_to_take_cars_for_simeon_gta_online.pdfIn PDF document text
- http://nowefuro.pbworks.com/w/file/fetch/144413658/14163958611.pdfIn PDF document text
- http://marutipug.pbworks.com/w/file/fetch/144429033/62430854338.pdfIn PDF document text
- http://nilanom.pbworks.com/f/17474804342.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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000f85a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF85A	118344 bytes
SHA-256: `98184abd9c6ae9113930be27453fd7ac18d590f1e00fa2321efc755c80e5a5c9`
`font_01_sfnt_off00025a32.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x25A32	3416 bytes
SHA-256: `688a1cf6805b072f4f0e78c7fd173d2c30696d2745614c6f36babf200270f162`
`font_02_sfnt_off0002664f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2664F	5004 bytes
SHA-256: `9789e3f37f6e1641d5f9a8adf0526c39564c5dc23212a177c0e2c67dd67dd813`
`font_03_sfnt_off00027768.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x27768	9864 bytes
SHA-256: `a2033912b92198aa88e17097d2e3630652f90d676e8aa5929bd313d6c43f04cb`

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