PDF malware analysis — malicious · eb01473d0c251803

MALICIOUS

PDF

84.4 KB Created: 2021-03-23 01:05:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20

MD5: 1479641742c9bbaed5dc421abdf2a3c8 SHA-1: 223d8e13d9857d6c770d7099408fb5d912eb2e8c SHA-256: eb01473d0c2518033804f92ccaedbaab629b72c7dd2457e1e64f6e46d318438d

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics, including a machine learning classifier and ClamAV, as malicious. It contains numerous embedded URLs, many of which point to disposable hosting and are used in a link farm, suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, appears to reference software cracking, further supporting a malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

Heuristics 5

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 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://bologen.ru/123?utm_term=borland+delphi+7++crack PDF link annotation
- https://cdn.sqhk.co/jinubodilev/2yhjjjf/nusolejedilozilaf.pdfIn PDF document text
- https://xolesozetenosox.weebly.com/uploads/1/3/1/0/131070434/tuporabi_goxix_wenanujit.pdfIn PDF document text
- http://galabogenezoso.getenjoyment.net/jexifojarifuxuwipop.pdfIn PDF document text
- https://rajizoru.weebly.com/uploads/1/3/1/8/131856770/7199338.pdfIn PDF document text
- https://xaxuxogupovugid.weebly.com/uploads/1/3/0/8/130874119/nikejimi-momekiso.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4376125/normal_5ff50dd3513b1.pdfIn PDF document text
- https://cdn.sqhk.co/wogokodu/haDq9hh/car_speedometer_application.pdfIn PDF document text
- https://suzagosezamonu.weebly.com/uploads/1/3/4/4/134446802/831fa.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4424637/normal_602077d1e3e55.pdfIn PDF document text
- http://mesanezedid.mypressonline.com/aminoglycosides_mode_of_action.pdfIn PDF document text
- https://rokilero.weebly.com/uploads/1/3/4/8/134879734/ef5ff13b9.pdfIn PDF document text
- https://cdn.sqhk.co/sirijunubi/biihhgf/solar_system_diagram_labeled.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/9a5209e6-3ba2-42c6-a51c-a5c95763d133/holt_physics_serway_faughn_answers.pdfIn PDF document text
- https://s3.amazonaws.com/sazixipame/black_desert_online_stuck.pdfIn PDF document text
- https://s3.amazonaws.com/jujadodedaruxix/36949700157.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/194a5b9d-3489-454a-8fc4-510f546594ce/73038258550.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/cbf6d8e7-754b-4889-9b25-11c6b920a725/gre_sending_scores_on_test_day.pdfIn PDF document text
- http://gonegexunu.myartsonline.com/taguxo.pdfIn PDF document text
- https://s3.amazonaws.com/devuxuzejozam/2003_ford_focus_2.0_sohc_serpentine_belt_diagram.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/ee76fe0c-06d3-4ef8-80d9-ac7b1695aaeb/6058154181.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_off0000e887.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE887	8496 bytes
SHA-256: `fa10ea4c4bfaa7f551550c625a321b0215b70c0c0ab91588a3d7e07834b55c1c`
`font_01_sfnt_off000104e2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x104E2	5176 bytes
SHA-256: `8780972ac267d5a726dca71640b2b93b556be57b4fcdd0a0e4ed5d68b1d2808c`
`font_02_sfnt_off00011679.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11679	14492 bytes
SHA-256: `b32b7c7213da67ac300dd3afcc53428fe5c825120a4e29368db658c32a86a1a0`

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