PDF malware analysis — malicious · 7420977f625b4e3f

MALICIOUS

PDF

81.7 KB Created: 2021-03-24 13:27:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10

MD5: 8aeae75512b82c5305a24632a544f0f7 SHA-1: 5b5ab17ccd22e20c7cf2b4bad56b20a1b2c5ff2c SHA-256: 7420977f625b4e3fea51923dbf33dff9e96a03306201e70a557d2e4a4618a78d

134 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains numerous embedded URLs, many of which point to disposable hosting and are part of a link farm, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the presence of external URIs and the overall structure are consistent with a phishing lure designed to trick users into downloading malicious content.

Machine Learning

Nyx PDF Classifier malicious score 0.9996

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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.
Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON

Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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://jumiwimov.ru/wix?keyword=how+to+use+ivue+tv+guide PDF link annotation
- http://rigoditibalun.mywebcommunity.org/bitsat_2020_question_paper_with_solutions_download.pdfIn PDF document text
- http://vizenam.medianewsonline.com/dikaki.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4476936/normal_5fe10317c66bc.pdfIn PDF document text
- http://sifaritube.sportsontheweb.net/wixaxufitoxulewew.pdfIn PDF document text
- https://cdn.sqhk.co/xajamenujo/jut6Wau/82364315660.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4369519/normal_5fcef7b75ce7f.pdfIn PDF document text
- https://cdn.sqhk.co/kivipemo/hhjdhid/43068504625.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4381531/normal_602ff07b24daa.pdfIn PDF document text
- https://cdn.sqhk.co/vakanaju/fijjhhg/free_download_motogp_games_for_pc_full_version.pdfIn PDF document text
- http://tuderoba.getenjoyment.net/rirulemabir.pdfIn PDF document text
- https://cdn.sqhk.co/fumodolanes/Os6ifEK/polabizivasele.pdfIn PDF document text
- http://figimumagoko.mygamesonline.org/serezepojefudiwubapuride.pdfIn PDF document text
- https://cdn.sqhk.co/noperizapewo/ijisse8/10253967986.pdfIn PDF document text
- https://cdn.sqhk.co/sunomedude/dgcpjgc/shoot_osama_game_online_unblocked.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4450345/normal_5fc920972bc5a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4379602/normal_601949bfa372e.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/desekusoxi/craftsman_lt_1500_mower_belt_replacement.pdfIn PDF document text
- http://zumosupol.epizy.com/the_norton_reader_shorter_14th_edition_ebook.pdfIn PDF document text
- https://s3.amazonaws.com/fibesezati/mazirojipubobazado.pdfIn PDF document text
- http://zuwemanikipe.rf.gd/51822969869.pdfIn PDF document text
- http://sejisetelasisel.epizy.com/xiaomi_mi_android_tv_box_review.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000eba6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEBA6	4768 bytes
SHA-256: `5b447290bc539aa1bc5b30a02d9589d74dfe14822ad2b793fc30c649fed63076`
`font_01_sfnt_off0000fc0c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFC0C	11188 bytes
SHA-256: `1c4190dada15a3941c0484c4735410defc77189afaf97f3e317859e48df1ffe6`
`font_02_sfnt_off00012259.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12259	16204 bytes
SHA-256: `31aa257675234f953cb39254c73a0c002637764ec2691c470e0912636c3685cf`

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