PDF malware analysis — malicious · 302c8affe538dff9

MALICIOUS

PDF

82.6 KB Created: 2021-03-22 05:31:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16

MD5: a9159390cabb00437af1225cffeed320 SHA-1: 19b7608635e97ff4ee84cdf2b19ee20abb6ea917 SHA-256: 302c8affe538dff9cff5a25103a3b8eca6192aecef19464796ed381590b4428e

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains numerous external URIs, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a phishing lure, possibly leveraging JavaScript for redirection.

Machine Learning

Nyx PDF Classifier malicious score 0.9995

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://nipisod.ru/123?utm_term=facebook+lite+for+iphone+6+plus PDF link annotation
- https://guvatezip.weebly.com/uploads/1/3/0/7/130776756/8100914.pdfIn PDF document text
- https://cdn.sqhk.co/xenivoronizu/gQtu2MJ/40516852196.pdfIn PDF document text
- http://jikusofare.mywebcommunity.org/british_english_grammar.pdfIn PDF document text
- http://nebofonuve.mywebcommunity.org/poxek.pdfIn PDF document text
- https://xujopikaxatanow.weebly.com/uploads/1/3/4/8/134850499/palawig.pdfIn PDF document text
- https://cdn.sqhk.co/jifexekezeli/hijjhjs/diduredejix.pdfIn PDF document text
- http://vugekowuzujed.scienceontheweb.net/hopper_reset_button.pdfIn PDF document text
- http://walolexokesufa.sportsontheweb.net/73881701694.pdfIn PDF document text
- https://kovumagamu.weebly.com/uploads/1/3/4/5/134578336/suvopegi-guxuwux.pdfIn PDF document text
- https://cdn.sqhk.co/feguzuvubut/aI6ii6T/37028041271.pdfIn PDF document text
- http://gigezojiradof.scienceontheweb.net/11622962053.pdfIn PDF document text
- https://cdn.sqhk.co/bifoligi/g0oiiia/new_ringtones_and_notification_sounds.pdfIn PDF document text
- http://bomaduworofa.medianewsonline.com/mevekidupe.pdfIn PDF document text
- https://cdn.sqhk.co/miburixegapu/ferhFsD/cooking_festival_sos_fomt.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://fovawipemezipu.myartsonline.com/38782009746.pdfIn PDF document text
- http://lumosaneja.onlinewebshop.net/desorden_alimenticio.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e9a5de1f-6aae-466c-9ca5-2da03744c08d/la_catedral_del_mar_serie_season_2.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/7fd573f5-94c1-4a68-b50b-02a0a9fae18a/arduino_74hc165_tutorial.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/ec6e7001-2844-498e-91e4-1383b9593f53/vepopotitokulafovapefig.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3d28cdf0-173e-4dec-98b9-a381b7168403/79407476177.pdfIn PDF document text
- http://jeborawaleko.atwebpages.com/35531284119.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c2e872df-60a2-45dc-b3b0-de24388a2763/63935323487.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e2aa.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE2AA	5416 bytes
SHA-256: `4712190b5ca4e430e059605dddf7646985b72a9ae00c4651f2c13d6b64d22e9b`
`font_01_sfnt_off0000f515.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF515	22348 bytes
SHA-256: `48544f67ee94e52486eed9bd631cb3e44b4b664b22c4cd9ecd4f9dc929e47cba`
`font_02_sfnt_off00012645.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12645	16092 bytes
SHA-256: `e9fe716c2abc985b12a899a49d5539e4e8be1b56d50c083b30290d85a2a7c848`

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