PDF malware analysis — malicious · f75fce173fa69abe

MALICIOUS

PDF

79.8 KB Created: 2021-02-12 05:37:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04

MD5: f5c9b68959f4c4527cc25e4d3f6a4486 SHA-1: a00061af9830342d09bf399acb99f5ae74b323b3 SHA-256: f75fce173fa69abebf87938d7e3da65721fe50279a0b1e9cd6b0903fcee41172

146 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. Heuristics indicate it functions as a link farm and contains a callback phishing lure, prompting users to call a number for support or billing issues. While no scripts were directly extracted, the presence of embedded URLs and the overall structure suggest it is designed to lead users to malicious sites or engage them in fraudulent phone calls.

Machine Learning

Nyx PDF Classifier malicious score 0.9995

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.
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://jottigo.ru/wix?keyword=cydia+apk+free+download PDF link annotation
- https://cdn.sqhk.co/lusimalifa/iighOjd/occupational_therapy_assistant_salary_nyc_2019.pdfIn PDF document text
- https://cdn.sqhk.co/vizakifito/jdbzOha/ludo_game_original_wala.pdfIn PDF document text
- https://cdn.sqhk.co/fuvazuginu/asjnwzp/best_electronic_music_for_studying.pdfIn PDF document text
- https://cdn.sqhk.co/kunimoxifagi/gfoaged/darakuxogupal.pdfIn PDF document text
- https://cdn.sqhk.co/jozojijejip/Sltjgig/jizenirexulidatuv.pdfIn PDF document text
- https://cdn.sqhk.co/xafemepino/VBjdidx/dasasowosevujolij.pdfIn PDF document text
- https://cdn.sqhk.co/kominepoli/mhcrPii/best_free_parental_control_app_for_iphone_snapchat.pdfIn PDF document text
- https://cdn.sqhk.co/tomubozes/qz2OhcS/best_phone_tracker_app_reviews.pdfIn PDF document text
- http://wugafis.66ghz.com/bram_stoker_dracula_s_guest.pdfIn PDF document text
- https://cdn.sqhk.co/tojofelekob/gfeTxDf/the_girl_in_the_third_floor_window_trailer.pdfIn PDF document text
- http://xukiwuze.22web.org/myob_accountedge_for_mac.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://nagikesedogoru.rf.gd/40449295376.pdfIn PDF document text
- http://jiwunix.epizy.com/30405784991.pdfIn PDF document text
- https://s3.amazonaws.com/zulezov/data_and_reporting_analyst_toptal_salary.pdfIn PDF document text
- https://s3.amazonaws.com/xanunafojuloki/blessing_of_bebe_ringtone_djpunjab.pdfIn PDF document text
- http://budekibume.epizy.com/24080182182.pdfIn PDF document text
- https://s3.amazonaws.com/tojazudibumogab/reporting_homogeneity_of_variance_apa.pdfIn PDF document text
- https://s3.amazonaws.com/vebisop/nokia_android_phone_amazon_india.pdfIn PDF document text
- http://numakuzugurewi.rf.gd/patefosuxuwovatisumosebag.pdfIn PDF document text
- https://s3.amazonaws.com/boxujetanonikuv/lojeziwomi.pdfIn PDF document text
- http://jutejuviwolopis.rf.gd/example_of_works_cited_page_mla_format.pdfIn PDF document text
- https://s3.amazonaws.com/kozewuposoridil/78921308563.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_off0000ef17.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEF17	4848 bytes
SHA-256: `a9396b3d76d98fd6d9f12120ee6bad07e370f6c63ef6f1e51f9fec1f3ed7db2b`
`font_01_sfnt_off0000ffba.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFFBA	10500 bytes
SHA-256: `e7f821e6db684f4e07e851a6c4faf32dc581750343dc10071c301329e743c340`
`font_02_sfnt_off000123b2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x123B2	4324 bytes
SHA-256: `7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71`

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