PDF malware analysis — malicious · 8b58363509dbe770

MALICIOUS

PDF

72.2 KB Created: 2021-03-21 21:29:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 35a118b09661c0ffb0d5abc5f437691e SHA-1: 95475e9cbb4a878d6525bd51b3cbbe0769341751 SHA-256: 8b58363509dbe770e59922e5f1a3fd8416709a216794eb8efcecf0032b0bb723

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL `https://jumiwimov.ru/aws?utm_term=can+you+break+into+sentry+safe` suggests a phishing lure, aiming to trick users into clicking the link. While no scripts were explicitly extracted, the PDF structure and embedded URLs are consistent with a phishing or malware distribution campaign.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 4

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

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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/aws?utm_term=can+you+break+into+sentry+safe
- https://cdn.sqhk.co/zatugudaxaji/TYibwgf/axon_training_entrar_en_la_plataforma.pdf
- http://viniveba.mywebcommunity.org/modal_verbs_exercises_advanced_level.pdf
- http://pazifelurup.medianewsonline.com/how_to_treat_worms_in_aquarium.pdf
- http://jojidasusesot.sportsontheweb.net/pujunekalevega.pdf
- http://pefiworawodud.mypressonline.com/55947748570.pdf
- https://cdn.sqhk.co/tarekekog/ibjbsgg/60479906509.pdf
- https://cdn.sqhk.co/nuvexajamu/XUhiidC/23701790196.pdf
- https://cdn.sqhk.co/butiluluvuk/Fjbfhcb/zunuzoziwimenomubuludawa.pdf
- http://bixaxivajujojar.mypressonline.com/administracion_de_medicamentos_por_via_intramuscular_ppt.pdf
- http://zonerokemub.getenjoyment.net/44929339808.pdf
- https://cdn.sqhk.co/ramowejub/jgifE1Y/movie_collection_unlocker.pdf
- http://fesunasisodenod.getenjoyment.net/riworasa.pdf
- http://kumululurug.scienceontheweb.net/cameron_hydraulic_data_book_free_download.pdf
- https://cdn.sqhk.co/kukisigafumi/vyhbjfv/notepad_free_app_for_android.pdf
- https://cdn.sqhk.co/toxinize/iUhaCih/53172943330.pdf
- http://xibawolafubiz.getenjoyment.net/bilegejax.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://duxegejuw.atwebpages.com/vukipewufimakijowivos.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000dff1.bin` `2109b9fe043643833e80ae262c84d02df62e26dda2f56842f9e73e7d8be1e1f8`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDFF1	4940 bytes
`font_01_sfnt_off0000f0d5.bin` `a9f1b259ff142e29f896337a6e8e90a85343318c108e4d1a69cd8b7ecbd37dd2`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF0D5	10344 bytes

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