PDF malware analysis — malicious · 89d960aee7d9541c

MALICIOUS

PDF

82.4 KB Created: 2021-03-11 03:55:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13

MD5: f743f7a9e29bfc67150be72cbd8633f5 SHA-1: 83af30cf7b1b75178f24830ec05366fd46be0e08 SHA-256: 89d960aee7d9541c87a9658c0b7e0d63076f8ed67cccaf3afe8ef3f1244bf37d

214 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged as malicious by multiple heuristics, including a critical finding for a malicious redirector link and a PDF link farm. The ML classifier also strongly indicated maliciousness. The embedded URLs, particularly 'https://crophysi.ru/123?utm_term=gabrielle+union+wedding+video', are likely used to lure victims to phishing or scam pages. The presence of numerous links suggests an attempt to game search engine results or distribute a wide array of malicious content.

Machine Learning

Nyx PDF Classifier malicious score 0.9993

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
PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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.
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://crophysi.ru/123?utm_term=gabrielle+union+wedding+video In PDF document text
- http://beamorem.com/lidejanebuzbr2b6.pdfIn PDF document text
- http://uscreditinquiry.info/617918165392tqha.pdfIn PDF document text
- https://\\/a10.gaanacdn.com\\\\/images\/albums\/0\/1877100\/crop_175x175_1490461655_1877100.jpg,parental_warning:0,isSponsored:0isAv_ad:0In PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://d848e4b6-662b-4424-a759-963270729452.filesusr.com/ugd/30e015_91a33a0a3f1b452093d515b613890ceb.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/sebunuzu/evermore_alyson_noel_espaol.pdfIn PDF document text
- https://s3.amazonaws.com/dapekufoxiraku/bissell_powersteamer_pro_parts.pdfIn PDF document text
- https://327bbe42-9aa5-4ca0-80e5-6c9857058a26.filesusr.com/ugd/2b870b_2491724decb443439e0ba523666b9c3b.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/falufusu/docker_hub_image_file.pdfIn PDF document text
- https://s3.amazonaws.com/nimuwet/ligurepilobefudofusugazor.pdfIn PDF document text
- https://s3.amazonaws.com/rudelazifizuvo/cars_2_game_free_pc.pdfIn PDF document text
- https://s3.amazonaws.com/fuzafuzeruwit/legefijiwam.pdfIn PDF document text
- https://s3.amazonaws.com/guvovigo/76755573675.pdfIn PDF document text
- https://8641c524-1fb5-4292-87ed-dd72f64d6c22.filesusr.com/ugd/9b7d8a_d76f8f57c322490bb78412cc5617a617.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/sixolose/hamlet_original_text.pdfIn PDF document text
- https://s3.amazonaws.com/tiniruru/international_research_journal_of_medicine_and_medical_sciences_indexing.pdfIn PDF document text
- https://s3.amazonaws.com/naxizugenabi/software_as_built_documentation_template.pdfIn PDF document text
- https://a50dbba5-e4fd-40cc-afa9-a45495a5accf.filesusr.com/ugd/7f929b_f2cb7c53ce4049cfa3b47f56f473ef0a.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/varoximu/36780328611.pdfIn PDF document text
- https://s3.amazonaws.com/julexekubaj/kazav.pdfIn PDF document text
- https://s3.amazonaws.com/wegugus/4242780996.pdfIn PDF document text
- https://s3.amazonaws.com/mamukawaxatali/acoustic_guitar_music_books_free.pdfIn PDF document text
- https://s3.amazonaws.com/xakajoziwibi/sejelaveravudifazisij.pdfIn PDF document text
- https://s3.amazonaws.com/tesodagiwor/free_full_movie_evil_dead.pdfIn PDF document text
- https://16012499-1299-48b0-8cdd-5f23a7749958.filesusr.com/ugd/fafc38_fd69f33a417b4525b047f699f20d0347.pdf?index=trueIn 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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000fe35.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFE35	5140 bytes
SHA-256: `a52690714105cb1aa61d527cc6cf36e22045c163ab6158afb17a2efd17f6ee02`
`font_01_sfnt_off00010fd4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10FD4	13764 bytes
SHA-256: `7896690e246f26306c4b46714e06f91eebdb2c76cb11ce183136bdcfabcf7d9f`

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