PDF malware analysis — malicious · 4ae8fbd24f29480d

MALICIOUS

PDF

86.2 KB Created: 2021-03-15 11:51:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30

MD5: bcddd83c82a80298be98f450dfea9f6b SHA-1: 5a05ea519d4f34b7e85685e80d116c6f22083d7c SHA-256: 4ae8fbd24f29480d710b588d39436e12088fc22dfa631ad96d903aa8d65e46b4

164 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous external links, a technique often used to redirect users to malicious websites or download further malware. The heuristic PDF_SEO_LINK_FARM indicates a large number of these links, suggesting a link farm for SEO manipulation or to host malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and embedded links are indicative of a phishing or malware distribution attempt.

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 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.
Urgency / deadline lure low SE_URGENCY_LURE

Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
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://ponafet.ru/wix?keyword=toshiba+dvr670ku+service+manual PDF link annotation
- http://gamukanemafutu.mywebcommunity.org/wim_hof_method_breathing_explained.pdfIn PDF document text
- http://jojazinex.mygamesonline.org/mofejoxujuvafojato.pdfIn PDF document text
- https://cdn.sqhk.co/lidavibojuje/ahBgehg/zadulutojomuxamajane.pdfIn PDF document text
- https://cdn.sqhk.co/sewuvavimebi/ygHjjig/age_of_empire_2_unlimited_population.pdfIn PDF document text
- https://cdn.sqhk.co/kerametunal/gegj5F6/hot_wheels_race_off_apk_hack_2020.pdfIn PDF document text
- https://cdn.sqhk.co/jubawiwa/0jaNyja/mega_ramp_x_games_2019.pdfIn PDF document text
- http://vipimuxatomefi.medianewsonline.com/tizuwa.pdfIn PDF document text
- https://cdn.sqhk.co/jotepomi/hmibW40/66475002630.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/jukoxisojow/crown_muriatic_acid_msds_sheet.pdfIn PDF document text
- https://s3.amazonaws.com/tobaziw/blackfriars_to_brighton_platform.pdfIn PDF document text
- https://1b6a1bbc-c127-422b-858f-c975555fd18f.filesusr.com/ugd/31f47c_d20add24622745f3ac35a902ba38ec2d.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/wopari/botiwut.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/967c2785-6cbf-4d5d-80f3-f0635c9c6a5a/28096145924.pdfIn PDF document text
- https://c948e902-2437-43f3-9f1e-7aaad30688a7.filesusr.com/ugd/464a75_735b084f9e4141b3b856421ec6b18b48.pdf?index=trueIn PDF document text
- http://wejufutaz.onlinewebshop.net/relion_premier_classic_reviews.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/d2065531-e7ca-4b98-a7e9-de8ab8984812/sword_art_online_novel_ending.pdfIn PDF document text
- https://s3.amazonaws.com/xurixado/31793758716.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/d6ac4ec2-ba80-4079-a7c2-6af370b2978d/black_and_tan_dachshund_for_sale.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b1564e4f-d019-449b-b00d-706c1b0bd638/vosubunoximop.pdfIn PDF document text
- https://44034db3-6cdd-4729-adf3-7ccd6afcf354.filesusr.com/ugd/9fe9cc_a0c1f497b88c41ad88ab7f096b5e6d35.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/pesetufavo/samawovenakepel.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/a89609bc-53e6-402e-8e9b-c8e435333f5c/defexoxalileganetikum.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_off000104b7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x104B7	5572 bytes
SHA-256: `b47afb1d0d7fd7b69151f61758f853a553b12e55eb1e813141f8faeb661ba5e0`
`font_01_sfnt_off00011780.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11780	10632 bytes
SHA-256: `c5cc493e282284fe63d0c0aabbd6c544161c93802a55886655945297317856c2`
`font_02_sfnt_off00013b9c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13B9C	4324 bytes
SHA-256: `4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3`

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