PDF malware analysis — malicious · d43dc0baa458b3b3

MALICIOUS

PDF

88.3 KB Created: 2021-03-18 23:56:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16

MD5: 0ee352798087ccba0cf65811e1efe62b SHA-1: df5ebee80000811bd3034ef2b1a6a57ce1b7bcb4 SHA-256: d43dc0baa458b3b306416b465d4277c7d6c3ee805a8e157572f7e3eb707547cb

134 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. It contains embedded JavaScript and numerous external URIs, including one pointing to 'baarspo.ru', suggesting an attempt to redirect the user to a malicious site. The document body, though heavily obfuscated, appears to contain metadata related to a product review, likely serving as a lure.

Machine Learning

Nyx PDF Classifier malicious score 0.9990

Heuristics 6

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.
Embedded JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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://baarspo.ru/strik?utm_term=hp+pavilion+27xw+review PDF link annotation
- http://lerob.info/lux_tx1500e_thermostat_user_guidewlrrn.pdfIn PDF document text
- https://cdn.sqhk.co/kekelivig/hjXVwXQ/icontrolav5_error_code_b27102.pdfIn PDF document text
- https://wepizowo.weebly.com/uploads/1/3/0/8/130813330/jugafan.pdfIn PDF document text
- http://tcerkovniekupola.space/an_escape_series_3_code5ijt3.pdfIn PDF document text
- http://foyou.store/three_course_menu_templatevhzfi.pdfIn PDF document text
- http://segwaywheelchair.ru/english_phonetics_and_phonology_free8wtio.pdfIn PDF document text
- http://tonagruz.ru/sap_bpc_guideojlto.pdfIn PDF document text
- https://cdn.sqhk.co/fofateze/jddpKG1/sales_playbook_template_free.pdfIn PDF document text
- https://cdn.sqhk.co/fitamorigob/hhaKSFa/45885635865.pdfIn PDF document text
- http://randname.ru/how_install_vinyl_decalsdrddl.pdfIn PDF document text
- http://kengoru.space/86846789952lu68i.pdfIn PDF document text
- https://rilulozopofebu.weebly.com/uploads/1/3/1/4/131406258/baxovavilaku.pdfIn PDF document text
- http://wekeb.space/insinkerator_555ss_installationvmpgz.pdfIn PDF document text
- https://jubiporosevuzu.weebly.com/uploads/1/3/2/6/132695682/pitepidu-zotopafa-govanuro-xovowubarareti.pdfIn PDF document text
- http://redirunna.xyz/robert_monroe_podre_poza_ciaem_audiobook_chomikujbry8r.pdfIn PDF document text
- https://cdn.sqhk.co/wevafofed/QSZnjhg/minecraft_diamond_armour_costume_uk.pdfIn PDF document text
- https://cdn.sqhk.co/detaludolef/dgtjakR/gixegoz.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- http://wegefug.rf.gd/lifan_110cc_engine_parts.pdfIn PDF document text
- http://kereterot.rf.gd/81059384717.pdfIn PDF document text
- https://s3.amazonaws.com/rezugekolaba/norton_antivirus_software_for_windows_7.pdfIn PDF document text
- https://s3.amazonaws.com/nonipesikiri/jinifuzufozowoparevot.pdfIn PDF document text
- https://s3.amazonaws.com/xasovewipeje/how_to_fix_my_spalding_basketball_hoop.pdfIn PDF document text
- http://nixevafuzija.epizy.com/gadalutadoliz.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00010985.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10985	4736 bytes
SHA-256: `959427a2a250255b8eb8c56d6f454978727515c175b3f33f3c2cf02f505789ad`
`font_01_sfnt_off000119b0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x119B0	13312 bytes
SHA-256: `23d15ceb9c4c601636d67d7416876ca922d57aea836c2ae8568d32282568a8d9`
`font_02_sfnt_off00014530.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x14530	4324 bytes
SHA-256: `1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361`

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