PDF malware analysis — malicious · eefc7d7a1c5a9862

MALICIOUS

PDF

81.1 KB Created: 2021-05-14 05:52:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03

MD5: aa2be75a449589351efeefebb3c7f3b6 SHA-1: 2b08ff8089cbd255c410831dba73fc7de5d48818 SHA-256: eefc7d7a1c5a9862419f395a5634d48f2bac53c7b462ab89158cfdb270b92173

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics and an ML classifier as malicious, with ClamAV identifying it as a phishing trojan. The document body, though heavily obfuscated, contains text related to a search query, and embedded URLs point to disposable hosting and a domain known for malicious activity. The primary attack vector appears to be directing users to a malicious URL under the guise of providing search results.

Machine Learning

Nyx PDF Classifier malicious score 0.9990

Heuristics 5

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.
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://fokemale.ru/strik?utm_term=magic+chef+dishwasher+filter+location PDF link annotation
- https://cdn.sqhk.co/kujexelorite/whdw1hb/marco_polo_elite_app.pdfIn PDF document text
- https://cdn.sqhk.co/zubavagi/Rhejfc7/85443981173.pdfIn PDF document text
- https://cdn.sqhk.co/vuzefoveniri/Lihjdjh/vawoza.pdfIn PDF document text
- http://50offshop.info/ap_us_history_reading_listoceh0.pdfIn PDF document text
- https://cdn.sqhk.co/veletafi/jjJ6ihd/the_maxx_streaming.pdfIn PDF document text
- https://cdn.sqhk.co/deloreba/ihfjifT/home_assistant_best_device_tracker.pdfIn PDF document text
- https://cdn.sqhk.co/jiliroba/f7qghgh/14415847615.pdfIn PDF document text
- http://islta.fun/giwovopisub29fc0.pdfIn PDF document text
- https://cdn.sqhk.co/texafikogot/dg1iehe/27446495070.pdfIn PDF document text
- http://pugopumonerab.22web.org/how_to_pray_an_intercessory_prayer.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://uploads.strikinglycdn.com/files/c1bd4ead-4516-4236-9199-07a504f6209f/best_trx_workout_for_beginners.pdfIn PDF document text
- https://s3.amazonaws.com/vavejijitatofu/buranegudotutarexudixez.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/5ea150ae-c554-4945-9463-7bd89acf4533/34608936979.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/574f0c2a-ba4d-4e59-bf4c-2ea0a0ebc947/how_to_name_and_write_formulas_for_ionic_and_covalent_compounds.pdfIn PDF document text
- https://s3.amazonaws.com/memexelu/cooperative_learning_strategies_kagan.pdfIn PDF document text
- https://s3.amazonaws.com/sorapobuk/black_suede_chunky_platform_heels.pdfIn PDF document text
- http://lipewax.rf.gd/jenufer.pdfIn PDF document text
- https://s3.amazonaws.com/bizamesuwepe/bladder_training_chart.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/232ed7d3-a9ec-4bd1-b7ab-61a4ba22a311/xopof.pdfIn PDF document text
- http://zajoneforisomi.rf.gd/godotuzipobovasibefafa.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b3f35f1a-82d3-4746-9665-7e63907180a9/siridisenatepojapowus.pdfIn PDF document text
- http://solobasoridevel.epizy.com/borazegenizimezubijanewo.pdfIn PDF document text
- http://robopawize.epizy.com/24263655020.pdfIn PDF document text
- https://s3.amazonaws.com/jeromopelurab/braille_font_free.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_off0000f26b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF26B	5168 bytes
SHA-256: `b0544631c9d6b5ca721378339f609a8b6086366c36c2cea542148e21926496c6`
`font_01_sfnt_off00010404.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10404	10696 bytes
SHA-256: `aee901ae84f0198d308b27d7b8e9021a09604c279661d6314d0646492cfbf75e`
`font_02_sfnt_off00012896.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12896	4324 bytes
SHA-256: `d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378`

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