PDF malware analysis — malicious · 1b0c534bbdda3748

MALICIOUS

PDF

69.5 KB Created: 2021-03-01 06:30:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05

MD5: f0fe1ad9fff23961c29378a14c07e32a SHA-1: 2fbfc732ed386f5ab43b98b6fba757d2b2454918 SHA-256: 1b0c534bbdda37486cb6715af50a52d27b7035e445696ab6788af2cf3dfe0988

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains multiple external links, with one pointing to a suspicious domain 'jacksth.ru' and another to a PDF on 's3.amazonaws.com' which is part of a detected link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery. No scripts were extracted, but the presence of numerous external links suggests an attempt to redirect the user to malicious content.

Machine Learning

Nyx PDF Classifier malicious score 0.9019

Heuristics 4

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.
External URI info PDF_URI

PDF contains an external URL action
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://jacksth.ru/award?keyword=how+to+calculate+maximum+bending+stress PDF link annotation
- https://feroxetisilujux.weebly.com/uploads/1/3/1/4/131409167/47a81.pdfIn PDF document text
- http://santaparker.store/pafagasaxukomsrgdg.pdfIn PDF document text
- http://opt05.ru/kewuzezinexuzebiwiijf2h.pdfIn PDF document text
- http://uanews.website/rpcs3_skate_3_downloadgncwg.pdfIn PDF document text
- http://eurosett.net/good_night_image_hd_free_shayarijwi3a.pdfIn PDF document text
- http://mediaverifiedbadge.com/lifunixulixegezbahvw.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/fulazelof/nofibabikobelatigid.pdfIn PDF document text
- https://s3.amazonaws.com/turip/guwinopelidedavugawegu.pdfIn PDF document text
- https://s3.amazonaws.com/godoremitiwuja/stanley_fatmax_700_charging_time.pdfIn PDF document text
- https://s3.amazonaws.com/zozofufulolig/abeda_inamdar_senior_college_admission_form_2019.pdfIn PDF document text
- https://s3.amazonaws.com/wusone/73720848619.pdfIn PDF document text
- https://s3.amazonaws.com/jubiferekaka/23435878004.pdfIn PDF document text
- https://s3.amazonaws.com/zugutixe/altivar_31_programming_manual.pdfIn PDF document text
- https://s3.amazonaws.com/vipinib/53253749988.pdfIn PDF document text
- https://s3.amazonaws.com/nefagolom/kofajex.pdfIn PDF document text
- https://s3.amazonaws.com/woberiz/osrs_slayer_guide_2019.pdfIn PDF document text
- https://s3.amazonaws.com/gekojulog/free_card_making_s_printables.pdfIn PDF document text
- https://s3.amazonaws.com/nijosinizo/56192972492.pdfIn 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_off0000db9f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDB9F	5520 bytes
SHA-256: `cf59c910b772d0826b9398a64ec95393ae598c90504c691bcab36f212b41f86e`
`font_01_sfnt_off0000ee5d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEE5D	14320 bytes
SHA-256: `d31acf5c64b64b6981a99f22b466321c3e306d19178e1cf94207a011c79dcc1d`

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