PDF malware analysis — malicious · 47f2d5ae3a16a3d5

MALICIOUS

PDF

74.0 KB Created: 2021-02-26 12:27:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16

MD5: 2029802ccf81be3ae27cbac17422937a SHA-1: d4b3313c83ff7486b223abb71a0bcda793323664 SHA-256: 47f2d5ae3a16a3d5f9a53db43f6073a84594e0e24fd8dc264ada274d2709a616

186 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was identified as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains a large number of external links, many pointing to disposable domains, suggesting a link farm or SEO spam operation. The embedded URLs, such as 'https://jottigo.ru/123?utm_term=effective+communication+skills+training+toronto', are likely used to redirect users to malicious or spam content. No scripts were extracted, but the PDF structure itself is designed to host and present these links.

Machine Learning

Nyx PDF Classifier malicious score 0.9996

Heuristics 6

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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://jottigo.ru/123?utm_term=effective+communication+skills+training+toronto PDF link annotation
- http://about-central.com/gujimimemadutahra4.pdfIn PDF document text
- https://venunuwaxel.weebly.com/uploads/1/3/2/7/132740799/gesomagavuva.pdfIn PDF document text
- http://wonnaturila.space/sufikisunoxizubipogiwifhgbfl.pdfIn PDF document text
- https://sewatebemadog.weebly.com/uploads/1/3/1/1/131164437/rojemepami.pdfIn PDF document text
- https://mavitebe.weebly.com/uploads/1/3/1/1/131163983/1367105.pdfIn PDF document text
- https://lizunega.weebly.com/uploads/1/3/5/3/135395432/wezanapejavexobazit.pdfIn PDF document text
- http://dwatches.site/ropamexurumufemubdsjap.pdfIn PDF document text
- http://xikumidevulofo.iblogger.org/lagu_cinta_luar_biasa_andmesh.pdfIn PDF document text
- https://koxowuberes.weebly.com/uploads/1/3/1/3/131379375/navibamesevi.pdfIn PDF document text
- https://kuvobawodamelis.weebly.com/uploads/1/3/5/3/135350379/34964.pdfIn PDF document text
- https://tirilume.weebly.com/uploads/1/3/4/8/134886795/xaziwozafok.pdfIn PDF document text
- https://koredude.weebly.com/uploads/1/3/1/4/131406285/vipexisizubo_zebuw_fikew_dimojatebamomot.pdfIn PDF document text
- http://winsl.space/ct_course_full_formopujf.pdfIn PDF document text
- https://mejotowud.weebly.com/uploads/1/3/0/9/130969644/6575968.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://bobujosu.epizy.com/perisejunadunajowoboge.pdfIn PDF document text
- http://kosejoviwo.epizy.com/auralux_constellations_cracked_apk.pdfIn PDF document text
- http://vowukexakajan.rf.gd/hyponatremia_management_european_guidelines.pdfIn PDF document text
- https://s3.amazonaws.com/wovitiku/8856380620.pdfIn PDF document text
- https://s3.amazonaws.com/tumuzu/ireport_plugin_for_netbeans_8._0.pdfIn PDF document text
- https://s3.amazonaws.com/dozore/bitexonifetudoxuvegegavu.pdfIn PDF document text
- http://tudefoka.epizy.com/biological_science_freeman.pdfIn PDF document text
- https://s3.amazonaws.com/niporofez/networking_mcq_with_answers.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_off0000e6e8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE6E8	5284 bytes
SHA-256: `4c2b5c58e853adc2d755b26178abeef90d6e8109b0a7fca6e1e2bbf2fb3bffae`
`font_01_sfnt_off0000f8da.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF8DA	9780 bytes
SHA-256: `d3558e6e3c8242710fd1988ebf3742664f204573a2aa16bf5fe0e034c812ea71`

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