PDF malware analysis — malicious · a800ef2615002e72

MALICIOUS

PDF

81.6 KB Created: 2021-03-09 19:50:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22

MD5: 292e248e2c71b3dc53660ef018b983a2 SHA-1: 679c05b8a50b6ff3d49c8deb2cacd844fc91df8b SHA-256: a800ef2615002e72d731c771514346c3a12418acad9f5d5ee6a5e3fd1b1d555f

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous external URIs and is flagged as a link farm on disposable hosting, indicating a malicious intent to redirect users. The ML classifier and ClamAV detection strongly suggest this PDF is malicious, likely a phishing or malware distribution lure. Although no scripts were extracted, the presence of many suspicious URLs points towards an attack pattern focused on driving traffic to compromised or malicious sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9961

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://ponafet.ru/123?utm_term=diabetes+guidelines+nice PDF link annotation
- http://thelait.pro/lord_of_the_rings_movies_timeline51j1w.pdfIn PDF document text
- http://healthyforczechrepublic.site/heat_and_glo_electric_fireplace_insert45a1l.pdfIn PDF document text
- http://proba7.xyz/black_and_decker_leaf_hog_accessoriesuts3k.pdfIn PDF document text
- https://cdn.sqhk.co/vixukose/dL5jixU/among_us_free_to_play_on_computer.pdfIn PDF document text
- http://mirror-x.org/literary_criticism_an_introduction_to_theory_and_practice_free_downloaduj324.pdfIn PDF document text
- http://relax35.ru/heritage_auctions_new_york_office15bp5.pdfIn PDF document text
- http://kewegagibemidaj.22web.org/furcula_damage_spreadsheet.pdfIn PDF document text
- https://cdn.sqhk.co/gubusase/cidjb2f/28602980671.pdfIn PDF document text
- http://lewodazegozi.iblogger.org/guide_pantheon_jungle_s8.pdfIn PDF document text
- http://pabubojuboju.iblogger.org/pevifipigubulekegapasoton.pdfIn PDF document text
- http://dvigatel.guru/chess_fundamentals_capablancagnqil.pdfIn PDF document text
- http://bigpleasure.ru/84306072553sxrjf.pdfIn PDF document text
- https://cdn.sqhk.co/noradinez/ugfgcgc/37234758457.pdfIn PDF document text
- http://fusubakitakudup.66ghz.com/vozobavetanuwejos.pdfIn PDF document text
- http://copyrightnotice-ig.com/wow_classic_shade_of_eranikus_guides10ma.pdfIn PDF document text
- https://cdn.sqhk.co/bajipugotox/uiajbhf/wejelamafujekon.pdfIn PDF document text
- http://how2clever.com/xegapipogudumizik650i7.pdfIn PDF document text
- https://cdn.sqhk.co/govazilose/ij1ghjc/ugm_salem_store.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/gozifep/tuzusovakeramik.pdfIn PDF document text
- http://fesavuvab.epizy.com/85542748155.pdfIn PDF document text
- https://s3.amazonaws.com/sugosubexez/genetic_variation_and_natural_selection_worksheet.pdfIn PDF document text
- https://s3.amazonaws.com/tosego/facebook_logo_hd.pdfIn PDF document text
- http://zezibinevuzeliw.epizy.com/23755479328.pdfIn PDF document text
- http://puzuniposodaf.epizy.com/runulejitix.pdfIn PDF document text
- https://s3.amazonaws.com/toguvaju/vuruwiwoxebuwosetajewor.pdfIn PDF document text
- http://zoxutudirufusoj.epizy.com/sample_conclusion_for_an_internship_report.pdfIn PDF document text
- https://s3.amazonaws.com/jejulurowev/broan_bcdj130bl_glacier_black_range_hood_30-inch.pdfIn PDF document text
- http://vibulowivez.epizy.com/18763423193.pdfIn PDF document text
- http://datidogebe.epizy.com/92219236112.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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000fff9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFFF9	5148 bytes
SHA-256: `0d772e61fdff9330490d5738d6154860ce7a63ac52ecf0d15a068bdf309f8416`
`font_01_sfnt_off0001118f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1118F	11532 bytes
SHA-256: `2b1e19dbbe1f60bb291bf740c02099930df8f3d063b40694fbaf8c63a466a92f`

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