PDF malware analysis — malicious · 26409445299a5093

MALICIOUS

PDF

66.1 KB Created: 2021-02-10 02:19:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05

MD5: 739d6f996f38fda7afdbe8ea49a5cb25 SHA-1: 658fd6891353e534bbd05e7427ae786c445a8f49 SHA-256: 26409445299a5093d31189f608c1bf00adafaf4c7323d20107b19c38c780b023

204 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many of which are SEO-redirectors, suggesting a link farm or phishing lure. The heuristic 'SE_MFA_LURE' specifically points to credential harvesting, likely by tricking users into approving MFA prompts or entering one-time codes. The primary IOC is the redirector URL, which likely leads to a phishing page or a payload download.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

Heuristics 7

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.
MFA / one-time-code harvesting lure high SE_MFA_LURE

Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK

PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
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://baarspo.ru/aws?utm_term=cisco+anyconnect++linux PDF link annotation
- https://tidepobowajaxuk.weebly.com/uploads/1/3/0/8/130814761/legufof_gijoxivuvi.pdfIn PDF document text
- https://bileravufal.weebly.com/uploads/1/3/4/7/134749654/5916976.pdfIn PDF document text
- https://wefizaxire.weebly.com/uploads/1/3/0/9/130969527/371ee4.pdfIn PDF document text
- https://dejegudiferu.weebly.com/uploads/1/3/1/8/131857494/goniwutubotuxe_kovosig.pdfIn PDF document text
- https://pejapuvurexoku.weebly.com/uploads/1/3/1/6/131636728/dugexixuvu.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://s3.amazonaws.com/jiwisi/58493142162.pdfIn PDF document text
- https://s3.amazonaws.com/bupesejirijejus/kalirademalatupoja.pdfIn PDF document text
- https://s3.amazonaws.com/vuxalirudidel/prison_break_toxicwap.pdfIn PDF document text
- https://s3.amazonaws.com/bokelur/connected_objects_and_ramps_worksheet_answers.pdfIn PDF document text
- https://s3.amazonaws.com/guvovigo/84910698222.pdfIn PDF document text
- https://s3.amazonaws.com/doxifuba/coffee_bar_video_song_hd.pdfIn PDF document text
- http://porininiji.epizy.com/ausentismo_laboral_tesis.pdfIn PDF document text
- https://s3.amazonaws.com/wutezigojuxi/25827374142.pdfIn PDF document text
- http://wubavon.epizy.com/firefox_esr_64_bit_deutsch.pdfIn PDF document text
- https://s3.amazonaws.com/vawoginele/business_case_analysis_template_free.pdfIn PDF document text
- https://s3.amazonaws.com/gupawupigawono/51338100812.pdfIn PDF document text
- http://zurabogefu.rf.gd/rukuw.pdfIn PDF document text
- http://zufonokimilije.epizy.com/lugufudabepu.pdfIn PDF document text
- https://s3.amazonaws.com/seriposuj/android_ios_cross_platform_game_development.pdfIn PDF document text
- https://s3.amazonaws.com/ladiwuzetawedi/alvin_and_chipmunks_sinhala_song_video.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_off0000ba44.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xBA44	4772 bytes
SHA-256: `076ef7439d41fb40708fa347293a5052cd21a46abdac24850e8ff73e597301c5`
`font_01_sfnt_off0000ca9c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCA9C	10092 bytes
SHA-256: `a47800df1e7878fbe63b58d2d7d95144fcaf7cb1a96528280e9b3ea9cf59f956`
`font_02_sfnt_off0000ed3b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xED3B	4324 bytes
SHA-256: `0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333`

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