PDF malware analysis — malicious · f4f0e92d0b6fbb31

MALICIOUS

PDF

87.7 KB Created: 2021-03-11 01:46:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23

MD5: 8726b5b0f07bea2563164a73bfb4477f SHA-1: a2f0a5d4e0948329bbbd606764ea0e329d63537d SHA-256: f4f0e92d0b6fbb31190fb55fe30baac56ca4b9ba0d291b6c56dd2880a07f4a68

186 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was identified as malicious by a machine learning classifier and ClamAV, flagging it as a phishing trojan. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or SEO manipulation tactic. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate it's designed to redirect users to potentially malicious or phishing content.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

Heuristics 6

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 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://druttle.ru/award?keyword=biology+project+on+cancer+for+class+12+pdf PDF link annotation
- https://ledapenilodaro.weebly.com/uploads/1/3/1/0/131070651/62a1327f251b.pdfIn PDF document text
- https://jozufibajas.weebly.com/uploads/1/3/0/9/130969385/4ca1ae.pdfIn PDF document text
- https://cdn.sqhk.co/kapopajij/gLjhJje/mint_launcher_pro_apk.pdfIn PDF document text
- https://cdn.sqhk.co/napumefu/EhhegjD/rebel_racing_mod_apk_an1.pdfIn PDF document text
- https://neseroto.weebly.com/uploads/1/3/5/3/135326238/2e36a41.pdfIn PDF document text
- https://pugewolusaw.weebly.com/uploads/1/3/1/4/131453132/3331120.pdfIn PDF document text
- https://cdn.sqhk.co/wukibezoso/z6Fghjd/22479250233.pdfIn PDF document text
- https://gonotelavekufuf.weebly.com/uploads/1/3/4/6/134615299/091b1b171a.pdfIn PDF document text
- https://bigonokefexix.weebly.com/uploads/1/3/4/5/134518339/6193619.pdfIn PDF document text
- https://mivetemadika.weebly.com/uploads/1/3/4/4/134471856/tizemibi.pdfIn PDF document text
- https://sezenoxesakibek.weebly.com/uploads/1/3/0/7/130740551/lavisokoregakox.pdfIn PDF document text
- https://wafilanukeg.weebly.com/uploads/1/3/5/3/135309269/c139698.pdfIn PDF document text
- https://cdn.sqhk.co/gelowidabik/aNgiVhi/juwuwarasoladipozifixen.pdfIn PDF document text
- https://gavokafiwafez.weebly.com/uploads/1/3/1/3/131381231/dcee5fddab0.pdfIn PDF document text
- https://motanaweda.weebly.com/uploads/1/3/4/3/134316912/walasi.pdfIn PDF document text
- https://sajanemi.weebly.com/uploads/1/3/4/7/134750514/7791773.pdfIn PDF document text
- https://cdn.sqhk.co/sadirorig/gegeuq5/xukopiji.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://6762652a-e869-40f3-960d-1446d4066230.filesusr.com/ugd/55e6b1_7d1867bc01b444848601901fbca0db0f.pdf?index=trueIn PDF document text
- https://a54de82d-0003-4787-801b-d7ee719c780a.filesusr.com/ugd/8d57bd_60ce87624d74420d98682b73f59bb33d.pdf?index=trueIn PDF document text
- https://12dd324c-696b-4d67-8c19-991f3eacec2c.filesusr.com/ugd/eeb7bd_048af4386bcd4aae8d96f3964fc437f5.pdf?index=trueIn PDF document text
- https://60f6da8c-824c-4163-aae9-6195f2ac7ed4.filesusr.com/ugd/7f16bd_5ce2b74c793042d5b45ede427a8a501e.pdf?index=trueIn 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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000117e1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x117E1	5732 bytes
SHA-256: `eaa3dac15de9af478f588df2dd3dbd9fa95ed96493b182ae7a3255d15478a432`
`font_01_sfnt_off00012b95.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12B95	11160 bytes
SHA-256: `ce8d9cce42b772e69373ab4e04a1ebfedb31e01925b19cc8f00f59e8cd49797e`

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