PDF malware analysis — malicious · c27237d4f0cf735d

MALICIOUS

PDF

75.1 KB Created: 2021-03-04 13:34:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25

MD5: 7617f097f5e4ae5989e2e495bbdddfa4 SHA-1: 2765abfae43cd276ec54090ed42f4a1baa9626fa SHA-256: c27237d4f0cf735d0e08eab354a3d0cab751617db870cf8ce06e11abeba0c8c7

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, with one prominent URL pointing to a suspicious domain ('ponafet.ru') that is likely used for phishing or malware distribution. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates the document is structured as a link farm on disposable hosting, further supporting a malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious content, likely leveraging a PDF exploit or social engineering.

Machine Learning

Nyx PDF Classifier malicious score 0.9956

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://ponafet.ru/strik?utm_term=the+greatest+miracle+in+the+world+audiobook PDF link annotation
- http://idealica-it.website/expanded_form_worksheets_for_1st_grade25ijc.pdfIn PDF document text
- http://setofexperience.site/rovepikekajemetubojijokoj8lyo.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369502/normal_5fd762c5e44e5.pdfIn PDF document text
- http://itverys.space/909487275833gbhj.pdfIn PDF document text
- http://jaxakevog.22web.org/god_of_war_guide_ps3.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4390385/normal_6014d94d733f6.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4413850/normal_5ff608f6d7a08.pdfIn PDF document text
- http://tewazezila.66ghz.com/nazorixefa.pdfIn PDF document text
- http://instapodarok.site/7188264131d4olw.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4425484/normal_5ff6860d236c2.pdfIn PDF document text
- http://obuv-kozha.ru/ironstrength_workoutzt841.pdfIn PDF document text
- http://italywom.space/grade_4_math_test_worksheetsouhyc.pdfIn PDF document text
- http://rmk4sale.xyz/pobuvujas78qw3.pdfIn PDF document text
- http://connexion-amelii.xyz/flight_simulator_plane_s9bltm.pdfIn PDF document text
- https://domomizidum.weebly.com/uploads/1/3/4/2/134235459/mejajetapati_vunatulobop.pdfIn PDF document text
- http://lavkavkusa.store/tunavuguwadosaxua9xo4.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4401983/normal_602efb1024fa9.pdfIn PDF document text
- https://vosaxivuminol.weebly.com/uploads/1/3/4/3/134387598/2556866.pdfIn PDF document text
- http://walkover.me/2662530287497wub.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/tuxalowafokuvo/what_reading_level_should_year_1_child_be.pdfIn PDF document text
- http://derajovaku.rf.gd/66029028031.pdfIn PDF document text
- https://s3.amazonaws.com/sizadagazagaj/displacement_equations_worksheet.pdfIn PDF document text
- http://duluvaxep.epizy.com/nijokamabuven.pdfIn PDF document text
- https://s3.amazonaws.com/nakuzafol/wunugavotopi.pdfIn PDF document text
- https://s3.amazonaws.com/zafaronivaj/who_created_the_first_light_bulb_in_the_world.pdfIn PDF document text
- https://s3.amazonaws.com/tazibabebamep/zoduminadodakojopitib.pdfIn PDF document text
- http://vavazewesepato.epizy.com/hypernatremia_treatment_guidelines_2017.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_off0000e41c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE41C	5600 bytes
SHA-256: `fe4465db3287ca1fed85fb27c6f1a3b24ce5504a095aad32e1f3f99d4b67b2a7`
`font_01_sfnt_off0000f70b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF70B	11272 bytes
SHA-256: `cd317f276704336589503d9dad552bb234f79efad848391d020951cb421d71f4`

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