PDF malware analysis — malicious · 6f12f008ff94df3d

MALICIOUS

PDF

77.0 KB Created: 2021-03-21 03:44:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23

MD5: 2c7f81da0c80f26c500c2ce9d56e5cf9 SHA-1: 2970dc5f2819a8d24d3e7b3802258ca2405151a0 SHA-256: 6f12f008ff94df3dd9ef3464cd4e126c105007bfc70988907909b947edc7b6b6

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. It contains a large number of external links, suggesting a link farm or phishing attempt. The embedded URLs point to domains that are likely used for distributing malicious content or redirecting to phishing sites. No scripts were extracted, but the PDF structure and numerous external links indicate a malicious intent to redirect users to potentially harmful websites.

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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://botokaw.ru/strik?utm_term=roman+numerals+exercises+for+grade+5 PDF link annotation
- https://cdn.sqhk.co/sirezozere/hip2LDr/annamalai_university_ba_tamil_hall_ticket.pdfIn PDF document text
- https://cdn.sqhk.co/dewufidabo/iaibha4/vejorivajisapuxenifobaj.pdfIn PDF document text
- https://cdn.sqhk.co/gogojelawov/hdheHif/wwe_news_smackdown_grades.pdfIn PDF document text
- https://cdn.sqhk.co/pemanunid/jh4ihhh/wogodorezuvemirupoje.pdfIn PDF document text
- https://cdn.sqhk.co/jukusenefow/zicidjb/15988604948.pdfIn PDF document text
- https://cdn.sqhk.co/sufokorume/hfjbbhj/tips_for_business_simulation_games.pdfIn PDF document text
- https://cdn.sqhk.co/zuwiwejagub/FHFgdhd/wijenapejatijofe.pdfIn PDF document text
- https://cdn.sqhk.co/gipiwelabaka/xhi7Ija/elasticsearch_mapping_template_date.pdfIn PDF document text
- https://cdn.sqhk.co/wozejodes/iejdhc9/jump_on_it_dance.pdfIn PDF document text
- https://cdn.sqhk.co/riwaxagi/AjeR1hd/togal.pdfIn PDF document text
- https://cdn.sqhk.co/jabuvilir/dhg5fL7/crush_them_all_artifact_slots.pdfIn PDF document text
- https://cdn.sqhk.co/vameduvide/hbjdgeg/15712953165.pdfIn PDF document text
- https://cdn.sqhk.co/bapuwanuvadi/ibj4Nen/android_car_radio_bluetooth_app.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://gimezevu.epizy.com/kemakowa.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/7897c8be-685d-479b-bbbe-c9002bcb28e2/what_happens_when_otc_stock_goes_public.pdfIn PDF document text
- https://f8ba888e-8f71-4fde-8303-550399648f4e.filesusr.com/ugd/17ce20_bba26f01d28f4a418415622ddd47733d.pdf?index=trueIn PDF document text
- http://gixuronubej.epizy.com/causes_and_effects_of_water_pollution.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/5946e5f5-6ab2-436d-a719-adab47d8601e/pupibazurumapurokemejure.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f547942f-a0fd-425b-977b-e3a3c66e3351/procreate_calligraphy_brush_tutorial.pdfIn PDF document text
- https://49b7c339-fea6-4bb3-bf7b-ca47af5263df.filesusr.com/ugd/6ca12d_809335d0968a477c8cc879e5305ce884.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/f0cd5ea2-5e89-4629-a73a-56bda9ab0858/pumem.pdfIn PDF document text
- https://d23eb412-52e1-45ef-a32a-0c032022daee.filesusr.com/ugd/03485a_e8e3193f68dd4845819cfd6dc4e4fd58.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/80b1e9c5-cea1-4812-badb-e018608a788a/pigevaneke.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_off0000e1bc.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE1BC	5340 bytes
SHA-256: `c6298059457d258adece4b33ed907364b4c26907948c8ea42e143138c0340637`
`font_01_sfnt_off0000f3ce.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF3CE	10828 bytes
SHA-256: `ee0c96ad0f2e067b1abfd642e25c7d0fd4f8e096dcb9ae0466e742844e4f6a61`
`font_02_sfnt_off000118e1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x118E1	4324 bytes
SHA-256: `1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e`

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