PDF malware analysis — malicious · 8aeacb60cf9120e5

MALICIOUS

PDF

99.7 KB Created: 2021-04-03 01:21:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24

MD5: 63e7231164f5eb0cd399621da0c87ff6 SHA-1: 3f1cf99da2f6586962d6b900fcfa8dd68c05b9d0 SHA-256: 8aeacb60cf9120e539a20c41ccef8ce0f1e7200af9830df02f496afd21dde733

146 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm and employs a callback lure, prompting users to contact a number for fraudulent purposes. While no scripts were directly extracted, the presence of external URIs suggests it may lead to further malicious content or phishing pages.

Machine Learning

Nyx PDF Classifier malicious score 0.9990

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 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.
Callback phishing phone lure medium SE_CALLBACK_LURE

Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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://druttle.ru/123?utm_term=isf+filing+template PDF link annotation
- http://mamubisuk.mypressonline.com/cabana_trial.pdfIn PDF document text
- http://janafan.scienceontheweb.net/42003942413.pdfIn PDF document text
- http://zuzorovix.scienceontheweb.net/aldol_condensation_project.pdfIn PDF document text
- http://zaxevef.getenjoyment.net/93525890765.pdfIn PDF document text
- https://cdn.sqhk.co/muxigatatini/dhfElik/rifasolimabapezodusiw.pdfIn PDF document text
- https://cdn.sqhk.co/vugomupuzisa/jicljiP/league_of_legends_evelynn_probuilds.pdfIn PDF document text
- http://tevoriveterusof.22web.org/system_analysis_and_design_test_bank.pdfIn PDF document text
- https://cdn.sqhk.co/tigixexaxi/NhdwifB/swamp_fox_theatre_showtimes.pdfIn PDF document text
- https://cdn.sqhk.co/moserusoba/eghgixA/road_draw_2_moto_racer_mod_apk.pdfIn PDF document text
- http://xupokaxe.medianewsonline.com/wigofakagitefevilato.pdfIn PDF document text
- http://lomilinixigal.mypressonline.com/ansiedad_sintomas_fisicos_y_psicologicos.pdfIn PDF document text
- http://guzexesuge.mypressonline.com/bodadalisusawujefazos.pdfIn PDF document text
- https://cdn.sqhk.co/doburazax/hZgfGih/forever_young_alphaville_piano_sheet_music.pdfIn PDF document text
- https://cdn.sqhk.co/jojikoxazew/iagVN1n/94823215409.pdfIn PDF document text
- http://marifivelaj.mygamesonline.org/kasejut.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/waxegatulo/55165617160.pdfIn PDF document text
- http://lugetobuzisufa.rf.gd/86548440687.pdfIn PDF document text
- http://suwepedufaresi.epizy.com/zopagesatoxawufubejodet.pdfIn PDF document text
- https://s3.amazonaws.com/mefovu/ipcc_1._5_degree_report_citation.pdfIn PDF document text
- http://kesotufujurox.rf.gd/buy_formal_dresses_nz.pdfIn PDF document text
- https://s3.amazonaws.com/sasufufa/rme_fireface_ucx_user_guide.pdfIn PDF document text
- http://bivojeda.atwebpages.com/adders_and_subtractors.pdfIn PDF document text
- http://zodesozagusi.rf.gd/chronic_pancreatitis_treatment_guidelines.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_off00013068.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13068	5060 bytes
SHA-256: `56c9a01199811e31554aaebc404b2ea4edacb6614620657ad782e44b884f5fc6`
`font_01_sfnt_off00014193.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x14193	12052 bytes
SHA-256: `8531965c7e7efd1cdf49d727f302e7b43828412c2fb5d52accfee5ccbd2689e5`
`font_02_sfnt_off00016acd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x16ACD	16140 bytes
SHA-256: `159427b32ed66bfbde86def5e6c2992bde67dfb25400c4000a37c9b59b949b61`

Open this report in the interactive analyzer, or submit your own file for analysis.