PDF malware analysis — malicious · ec9575e6c473b5e0

MALICIOUS

PDF

90.2 KB Created: 2021-03-18 16:52:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25

MD5: 8268d0ade11d58d9707582d26ea805a1 SHA-1: d473e7a8e67ee26b7f69f690efa616cee3846fba SHA-256: ec9575e6c473b5e0ead8a3eb431179c1062c460ae1cc1a4f6f4b85ceacb9ed0f

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous embedded URLs, many of which point to disposable domains and are likely part of a link farm designed to redirect users to malicious sites. The ML classifier and ClamAV detection strongly indicate malicious intent, specifically phishing. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to trick users into visiting potentially harmful web content.

Machine Learning

Nyx PDF Classifier malicious score 0.9992

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://soxebez.ru/strik?utm_term=2000+ford+ranger+bed+specs PDF link annotation
- http://gepexoliv.medianewsonline.com/72338217126.pdfIn PDF document text
- http://hot-money.fun/body_ritual_among_the_nacirema_worksheet_answer_key25i76.pdfIn PDF document text
- http://zexaribamemavi.sportsontheweb.net/pikaxowex.pdfIn PDF document text
- http://creditscorecard.info/vifaramumuvaledaftsjf.pdfIn PDF document text
- http://naturebiolog.fun/47207185107v50z2.pdfIn PDF document text
- http://xiwesesakuvel.medianewsonline.com/gramatica_espaol_tiempos_verbales.pdfIn PDF document text
- http://naturfresh.fun/resuwamiberexenimitujononc9t72.pdfIn PDF document text
- http://melowew.scienceontheweb.net/kenmore_400_dryer_heating_element_part_number.pdfIn PDF document text
- http://sizuxofutitarax.mypressonline.com/les_miserables_broadway_movie.pdfIn PDF document text
- http://lololoj.sportsontheweb.net/sirimijonexenuzod.pdfIn PDF document text
- http://kyukty68.xyz/what_is_the_best_outdoor_tv_antenna_to_buy6napp.pdfIn PDF document text
- http://macsk.space/674115422351s588.pdfIn PDF document text
- http://de-bewertung-id-q2e5t23.top/kesorld5s5.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
- https://s3.amazonaws.com/xomudufe/mijaji.pdfIn PDF document text
- https://s3.amazonaws.com/mubefula/kofadiloxowomasowoti.pdfIn PDF document text
- https://s3.amazonaws.com/sowewazulejewi/how_does_it_make_you_feel_when_you_help_someone.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/91852518-3b89-4cba-8617-30adc69fcb69/tujozim.pdfIn PDF document text
- https://s3.amazonaws.com/jimugivos/mewugatusujoraxopi.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/ab567c86-4c84-462d-b196-68e6afa234ca/gebunanadebedozopigo.pdfIn PDF document text
- https://s3.amazonaws.com/benubapopikaj/whirlpool_microwave_manual_wmh31017hb.pdfIn PDF document text
- http://jafixomedimun.onlinewebshop.net/minecraft_bestiary_book.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f9e8674e-79dd-4f4b-8e4f-859f167921ff/62538638380.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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000fc9a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFC9A	5272 bytes
SHA-256: `fe5482699e120c50a7e259352c0a599d9bd361fe464ebdf76b11b1de7bce1128`
`font_01_sfnt_off00010e6d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10E6D	11632 bytes
SHA-256: `d84937bd08b54ae3e8c039507f290cdb897cb25a3ac989f37d6a0b40ca020852`
`font_02_sfnt_off0001363c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1363C	16204 bytes
SHA-256: `e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15`
`font_03_sfnt_off00014b6a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x14B6A	4324 bytes
SHA-256: `0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333`

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