PDF malware analysis — malicious · 1811c37552deb6d6

MALICIOUS

PDF

73.0 KB Created: 2021-04-04 20:55:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13

MD5: 9295fe4ee262a4fce298d81a21d589e4 SHA-1: 56d61e6cd7754b3f653a40b19dbda5fdb3430523 SHA-256: 1811c37552deb6d6fa395d7039d65679682b4b1a1d975e35fbf60e963b25aa66

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains an embedded URI pointing to a suspicious domain, vilenefex.ru, which is likely used to host phishing content or malware. The heuristic 'ML_NYX_PDF_MALICIOUS' and 'CLAMAV_DETECTION' strongly indicate malicious intent. The document body, though heavily obfuscated, contains keywords related to 'Clash of Clans' strategy, suggesting a lure to attract users to the malicious link.

Machine Learning

Nyx PDF Classifier malicious score 0.9989

Heuristics 5

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 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://vilenefex.ru/wix?keyword=clash+of+clans+th8+troops+strategy PDF link annotation
- http://gifuketedep.22web.org/tozalotisuzineman.pdfIn PDF document text
- http://hdvideo.design/81544861666c4jbc.pdfIn PDF document text
- http://cocobuka3.xyz/384899923181du26.pdfIn PDF document text
- http://setefigidoral.iblogger.org/fiximajoxedikazefisebi.pdfIn PDF document text
- https://lotekine.weebly.com/uploads/1/3/1/3/131381428/dosezitibawoj.pdfIn PDF document text
- http://togilikosilit.22web.org/96737950292.pdfIn PDF document text
- http://detonic-de.website/neato_botvac_d5_connected_software_updatezrg8x.pdfIn PDF document text
- https://seladimara.weebly.com/uploads/1/3/4/4/134460986/a8c063e.pdfIn PDF document text
- https://negowisavu.weebly.com/uploads/1/3/1/4/131406226/4144971.pdfIn PDF document text
- https://towuzisutodugo.weebly.com/uploads/1/3/0/9/130969847/8684455.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/liwafo/tobubosozonow.pdfIn PDF document text
- http://losikamadan.epizy.com/english_synonyms_and_antonyms_for_competitive_exams.pdfIn PDF document text
- https://3d5b2cfc-74f5-4c02-8466-0d369b02955c.filesusr.com/ugd/69b86f_5294a03a89434e2bb51b04506dbd641b.pdf?index=trueIn PDF document text
- http://vazibitadunowak.epizy.com/boy_scouts_bear_handbook.pdfIn PDF document text
- http://lebevinawefebo.rf.gd/steelers_injury_report_week_2.pdfIn PDF document text
- https://s3.amazonaws.com/zozuxukoxo/13572956555.pdfIn PDF document text
- https://78fc25e8-d533-4ec3-a480-3617e8cc0d4b.filesusr.com/ugd/aa5866_dac31a24f32f4133abbda4b45eb4daf5.pdf?index=trueIn PDF document text
- https://4bf641bf-117a-4913-931f-55e49063997f.filesusr.com/ugd/5befcb_aced34b0d93e475e97bd30bb036fa800.pdf?index=trueIn PDF document text
- http://wedutatitupaze.epizy.com/snake_and_ladder_3d_mod.pdfIn PDF document text
- https://s3.amazonaws.com/tarizirefevifab/succession_planning_model_template.pdfIn PDF document text
- https://621cd70f-1aca-46de-91df-1bd8162c3e90.filesusr.com/ugd/9f1ad6_02711fa70e614d8d98232267318d3384.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/limepusotanal/android_agenda_synchroniseren_met_iphone.pdfIn PDF document text
- http://dazulenaredon.rf.gd/dajomativejotafekok.pdfIn PDF document text
- http://demunoj.epizy.com/ultimo_aggiornamento_instagram_apk.pdfIn PDF document text
- https://s3.amazonaws.com/topipovikapari/23343068418.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_off0000d324.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD324	5336 bytes
SHA-256: `adae1e0a44a5fe632bf112eead2f4e9f6ce802bd8c56b7068d707b01ce50c7b0`
`font_01_sfnt_off0000e545.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE545	10100 bytes
SHA-256: `d72b47245bd23a0b8a8e93a24174b1cfa5fc498cbb29c7dab57c7e19b62cab70`
`font_02_sfnt_off0001080b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1080B	4324 bytes
SHA-256: `1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e`

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