PDF malware analysis — malicious · e41b02682c1ca0b3

MALICIOUS

PDF

79.1 KB Created: 2021-03-16 23:48:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10

MD5: f360d274a4f714e2d09fb586ba23bf22 SHA-1: 5855aba29b1bacdb0486bfaf755a127ceffbd2f3 SHA-256: e41b02682c1ca0b3e2655b7024de2846e36f756d1d301c86094deb8848471c2a

166 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of a link farm with 30 links across 16 distinct hosts, including disposable domains, suggests an attempt to obscure the true destination or distribute a payload. The 'Password-protected archive handoff' heuristic further supports the idea that this document is a lure to trick users into downloading and opening an encrypted payload, likely containing malware.

Machine Learning

Nyx PDF Classifier malicious score 0.9993

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://jacksth.ru/strik?utm_term=the+intruder+play+analysis PDF link annotation
- https://sebidodeg.weebly.com/uploads/1/3/4/4/134438526/7e3f48f58.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4446770/normal_6016dfbe901c1.pdfIn PDF document text
- https://cdn.sqhk.co/xidatelo/UJA4hcp/prix_installation_electrique_maison_100m2.pdfIn PDF document text
- http://fumexijana.getenjoyment.net/gnosa_reiki_symbol_meaning.pdfIn PDF document text
- https://cdn.sqhk.co/petebeki/Picjcij/21515978389.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366364/normal_5fd267be9f363.pdfIn PDF document text
- http://nipokaxa.getenjoyment.net/whirlpool_front_load_washer_error_code_f5_e2.pdfIn PDF document text
- https://cdn.sqhk.co/wekaradukuve/3yWji2I/misapagerugigaguriruse.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4477155/normal_60251a714a8bc.pdfIn PDF document text
- https://cdn.sqhk.co/fubafonu/hg5haYN/tu_aashiqui_song_video_mp4.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4455898/normal_5ff2b9ed53190.pdfIn PDF document text
- https://xaleratugigajij.weebly.com/uploads/1/3/4/6/134631249/2580039.pdfIn PDF document text
- https://bufudelazevel.weebly.com/uploads/1/3/4/7/134734798/f5860ddcc.pdfIn PDF document text
- https://cdn.sqhk.co/ribobujir/Nhbjfyv/73391944022.pdfIn PDF document text
- https://jasemoluzisad.weebly.com/uploads/1/3/5/9/135968146/a56a9.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://fidikaxano.myartsonline.com/cbse_maths_book_class_10_solutions_free_download.pdfIn PDF document text
- http://xanomake.epizy.com/99290125726.pdfIn PDF document text
- http://lipesomidu.epizy.com/budud.pdfIn PDF document text
- https://s3.amazonaws.com/takebemanijewok/7560915629.pdfIn PDF document text
- http://limazajot.rf.gd/47897982285.pdfIn PDF document text
- https://s3.amazonaws.com/kudowo/dunkin_doughnuts_wake_up_wrap_nutrition.pdfIn PDF document text
- http://baverasoge.epizy.com/3d_max_2016_trial.pdfIn PDF document text
- http://xolavozezimodan.onlinewebshop.net/how_to_calculate_normal_stress_in_a_beam.pdfIn PDF document text
- https://s3.amazonaws.com/tixedujegibex/86051264568.pdfIn PDF document text
- https://s3.amazonaws.com/norozovijalu/birkdale_school_uniform.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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000f997.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF997	5100 bytes
SHA-256: `6b109e60f48c579bb32d3c57794b4e74e26a73d64b5a38f1e5fa8ea69346251f`
`font_01_sfnt_off00010aed.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10AED	10772 bytes
SHA-256: `387216517ddd051515c80c8d95127f28079ce1fee682c7f7d2cf7c61d9ab2218`

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