PDF malware analysis — malicious · 376979f1340efee5

MALICIOUS

PDF

69.7 KB Created: 2021-01-12 11:08:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11

MD5: f5399584097ce131d0fa2fd5d49ff0f4 SHA-1: 8135ec40cd0ce723d9304f358a4a5ad8c2f17b00 SHA-256: 376979f1340efee5512974b6609f016b549f262c139d7580f560dd1c70ccd526

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file was detected as malicious by a ML classifier and ClamAV, indicating a high likelihood of malicious intent. The PDF contains embedded URLs that point to external resources, suggesting it is used to redirect users to potentially harmful websites. The presence of PDF_URI and EMBEDDED_URL heuristics further supports this, indicating the document's primary function is to facilitate access to these external links.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 4

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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://trafftec.ru/aws?utm_term=formule+pizza+bowling+colomiers PDF link annotation
- https://cdn.sqhk.co/gogojiranat/xhiifh9/29835862273.pdfIn PDF document text
- https://cdn.sqhk.co/ludibipimilu/DijjwVI/make_a_list_online_and_print.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4444869/normal_5fa9cd81204cb.pdfIn PDF document text
- https://site-1244465.mozfiles.com/files/1244465/adobe_flash_player_debug.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4424647/normal_5fbbf006bc16c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4404730/normal_5fae57df3b031.pdfIn PDF document text
- https://site-1172627.mozfiles.com/files/1172627/download_game_drake_n_trap_mod.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4459463/normal_5fcac8f7bd5de.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4454988/normal_5fc4285911945.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/nunakixuma/aat_bookkeeping_controls.pdfIn PDF document text
- https://s3.amazonaws.com/zumomasugipeno/autosync_google_drive_android.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_off0000d06a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD06A	5488 bytes
SHA-256: `c5b03e3466dc22212653c3a3297ce3f267920b403f4ba46391333e0e39b1d252`
`font_01_sfnt_off0000e31a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE31A	11604 bytes
SHA-256: `6754fa5710f049fb28ef865c544ed6bf7637df6797ee21cb8f4de39d8ecfc25c`

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