PDF malware analysis — malicious · 86061697a8d602ab

MALICIOUS

PDF

84.2 KB Created: 2021-03-04 17:41:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23

MD5: 83fe8f35a0b97f7d8d5cf2d480ac3d06 SHA-1: a5dde5a6502d499ea7f70e9340cb3d80e4f97add SHA-256: 86061697a8d602ab8e452271463b4aa9ad6b18d648fad68975c406ac7a04cb8a

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The document contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm designed to redirect users to malicious content. The primary lure appears to be a notification about an award, directing users to the URL https://pelibifir.ru/award.

Machine Learning

Nyx PDF Classifier malicious score 0.9990

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://pelibifir.ru/award?keyword=la+esposa+que+ora+d%25C3%25ADa+3 PDF link annotation
- http://fajujefa.getenjoyment.net/siletutumenixovetajigot.pdfIn PDF document text
- https://cdn.sqhk.co/tenalewi/iKjghe3/legendary_warriors_duel_links.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4427105/normal_5fe6daa127489.pdfIn PDF document text
- https://cdn.sqhk.co/kukisigafumi/h2D5igP/gawoxaregatevum.pdfIn PDF document text
- https://cdn.sqhk.co/vozogekom/ghaidcI/hachiko_statue_film.pdfIn PDF document text
- http://exampl1214.com/80768499882senpp.pdfIn PDF document text
- http://bebetadiruj.mywebcommunity.org/rosemount_1056_wiring_diagram.pdfIn PDF document text
- http://shop-profildoors.ru/254713324904pfop.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4425738/normal_5fcd25810adab.pdfIn PDF document text
- https://cdn.sqhk.co/bofozuto/qgd1geo/pevodolapoxofafanosuwif.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4503533/normal_6018e861b4ed4.pdfIn PDF document text
- http://xitodefigatefuj.medianewsonline.com/what_does_service_b_mean_on_a_mercedes_c300.pdfIn PDF document text
- http://dalidusiz.mywebcommunity.org/which_companies_hire_data_analysts.pdfIn PDF document text
- http://all-system7.club/how_to_use_different_pool_filter_valve_settings1ubet.pdfIn PDF document text
- https://cdn.sqhk.co/jeporikate/igH8jjx/working_days_calendar_2019_canada.pdfIn PDF document text
- http://tifoxikutawe.sportsontheweb.net/dell_poweredge_2950_ems01_specs.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4417990/normal_5fe0846aa597a.pdfIn PDF document text
- http://lezigovedavide.getenjoyment.net/35649564955.pdfIn PDF document text
- http://morasuxod.getenjoyment.net/urban_tantra_training.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://gadexasumale.epizy.com/math_101.pdfIn PDF document text
- http://besafetusupug.atwebpages.com/what_adaptations_help_lions_survive.pdfIn PDF document text
- http://zigixukotezu.epizy.com/26801122803.pdfIn PDF document text
- http://sosefaxerutujax.rf.gd/larebobedosaximevizunadid.pdfIn PDF document text
- http://robajev.rf.gd/ashi_hi_bhaubij_marathi_picture.pdfIn PDF document text
- http://lifobem.myartsonline.com/tisenalizomu.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_off0000f3b2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF3B2	5208 bytes
SHA-256: `2d69dd0b2af927124ce4591b14718dca8d012ae0d1a4963587604c40f041fc40`
`font_01_sfnt_off0001057a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1057A	11424 bytes
SHA-256: `4034173f5206f47f5e9e2623fe5920b00e0df9927587fd5170358f60eb51dda3`
`font_02_sfnt_off00012a8b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12A8B	16416 bytes
SHA-256: `ace7ded0588703fcbae27ee667d799cfe7370f1ba098a699f0308c67a12ce946`

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