PDF malware analysis — malicious · 34a664fdac25f5d8

MALICIOUS

PDF

78.9 KB Created: 2021-06-02 07:22:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27

MD5: 614eb8289c348f8d6fc23d78efbd1246 SHA-1: b1f24827d966297ef86884ced5ce1bbef5c06e2b SHA-256: 34a664fdac25f5d8df30ab0a22ab18908a9d0f201527f90c35c32b60f0966a2e

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 critical ClamAV detection for 'Pdf.Phishing.Trojan' and an ML classifier indicating high maliciousness. The presence of numerous embedded URLs, including one pointing to 'irlanc.ru', suggests a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains metadata related to PDF generation, indicating it's likely a lure document designed to redirect users to malicious content.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

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://irlanc.ru/pbw?utm_term=administracion+general+e+industrial+henry+fayol+pdf PDF link annotation
- https://cdn-cms.f-static.net/uploads/4465557/normal_603d6e09b19c4.pdfIn PDF document text
- https://tebuzanowazori.weebly.com/uploads/1/3/4/6/134632783/wovumosa.pdfIn PDF document text
- https://nalagaruzu.weebly.com/uploads/1/3/3/9/133997435/tatapubodirega-kikigunawovomo-pukadefiw-xiruk.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4381962/normal_606d8dd274913.pdfIn PDF document text
- https://rulewosiziruzo.weebly.com/uploads/1/3/0/7/130739522/fofodegadinikir.pdfIn PDF document text
- https://runogobikekeg.weebly.com/uploads/1/3/5/3/135350887/tidefajaxad_bedumo_simosatomebix.pdfIn PDF document text
- https://velumosatowe.weebly.com/uploads/1/3/4/8/134883763/petam.pdfIn PDF document text
- https://wegetifadozapuf.weebly.com/uploads/1/3/1/6/131637062/biregirefavamel.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4383450/normal_604058fb5915b.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://podimil.pbworks.com/f/derecho_penal_griselda_amuchategui_oxford.pdfIn PDF document text
- http://visetululiv.pbworks.com/w/file/fetch/144416160/73574146546.pdfIn PDF document text
- http://gajufabeke.pbworks.com/w/file/fetch/144423336/80452781275.pdfIn PDF document text
- http://nilanom.pbworks.com/w/file/fetch/144416556/what_is_an_output_force.pdfIn PDF document text
- http://mepijewaj.pbworks.com/f/muberusow.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/7753f100-1c13-4ee5-a61c-38ea674de150/don_juan_demarco_ost.pdfIn PDF document text
- http://namikikis.pbworks.com/w/file/fetch/144488145/remenesimosabipir.pdfIn PDF document text
- http://sofutikajen.pbworks.com/w/file/fetch/144461484/91191639182.pdfIn PDF document text
- http://kokoxudalux.pbworks.com/f/encyclopedia_judaica_vol_21.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/1647865c-ec5d-48e9-885a-c2b5ea77e0f1/phrasal_verbs_in_english_with_examples.pdfIn PDF document text
- http://jajisaparev.pbworks.com/f/para_que_sirve_el_te_de_manzanilla_con_limon.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_off0000dd7e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDD7E	5660 bytes
SHA-256: `2ad880cfa954d8ee7766dc45b2eb0a20105ef1d80269f5419b178db40cdf23df`
`font_01_sfnt_off0000f09c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF09C	11608 bytes
SHA-256: `fc558f055836e81522346db6b5fe4b76db51c022acd7a3c0e3c0b9607bcc61de`
`font_02_sfnt_off000116e0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x116E0	16204 bytes
SHA-256: `a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd`

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