PDF malware analysis — malicious · 563bed8a9a983a03

MALICIOUS

PDF

82.1 KB Created: 2021-02-22 15:12:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22

MD5: 42ba8560eb57eb09ded834db1513f10d SHA-1: ad4ab5b846fa3dda8f9d5519da7a25e5736369f3 SHA-256: 563bed8a9a983a03d24b9110739975c1f41afaebc37cd766fde71f4ad8d1bbdb

166 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs and is flagged as a link farm, suggesting a phishing or malware distribution attempt. The 'SE_PASSWORD_ARCHIVE_LURE' heuristic indicates the document likely instructs the user to open a password-protected archive, a common tactic to evade gateway scanning. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or trojan distribution.

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
Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE

Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
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://maypoin.ru/strik?utm_term=tajweed+rules+pdf+malayalam PDF link annotation
- http://help-verifiedbadgecenter.com/ferrari_p80_c10bji.pdfIn PDF document text
- https://cdn.sqhk.co/sigidezok/ifhdTmC/70402241172.pdfIn PDF document text
- http://world-wildshop.com/daily_schedule_template_for_autism0nayh.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4483345/normal_60172dcb381ca.pdfIn PDF document text
- http://torchqbfl.fun/21037047597jsg1f.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4449783/normal_5fe80bf7bc68d.pdfIn PDF document text
- http://helpverifybadges.com/zegakapesipufaxakofofwvdcf.pdfIn PDF document text
- http://cardioactiveufficiale.site/fce_speaking_test_sample65o13.pdfIn PDF document text
- https://cdn.sqhk.co/xugosovemi/gBmhbm9/94844642757.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4484807/normal_60322b1b11c09.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4393188/normal_5fd7faad24e4d.pdfIn PDF document text
- https://cdn.sqhk.co/loxusovi/hVijOVD/56890947015.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4423148/normal_601d5eda96a56.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4503533/normal_5fd99db022e32.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4417023/normal_6029e3759daf5.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4403563/normal_5fede9e4da416.pdfIn PDF document text
- http://smc.org.in)MeeraRegularMeera2016SMC7.0.0+20171102HussainIn PDF document text
- http://smc.org.inhttp://smc.org.inIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/jemazejodep/dsei_2017_exhibitor_list.pdfIn PDF document text
- https://s3.amazonaws.com/megodipewukitoj/elsevier_word_template_journal.pdfIn PDF document text
- https://s3.amazonaws.com/nitidadufetenu/cellules_souches_msenchymateuse.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
- https://gitlab.com/smc/meera/blob/master/COPYINGIn 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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off0000ea54.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0xEA54	6228 bytes
SHA-256: `39a47807fadfa5c527d3bbdb4e03648adca0fc90c576711fb729566aa85f0df7`
`font_00_sfnt_off0000d7f6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD7F6	5404 bytes
SHA-256: `0d6919db950ba02f30883ddfe3ac6f2ae60f6b080482197be7aeba39ee50237c`
`font_02_sfnt_off000100ac.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x100AC	10736 bytes
SHA-256: `e362e880a0245230aa0a7f46c7b19fe3961c3c4c1ed5bc87d0badbc75bca11c3`
`font_03_sfnt_off0001259e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1259E	16132 bytes
SHA-256: `ca0bb856d51d4c440eb4e48db524e4b4a87bf80294704eab3ae97752e74326e1`

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