Malicious PDF — malware analysis report

Static analysis result for SHA-256 b09587597c8c79e8…

MALICIOUS

PDF

172.9 KB Created: 2020-12-28 13:45:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f8149994c16bf98c4bcf3e274af4117a SHA-1: 1bb8720652d7a1bb56c40f38584e90d24335119f SHA-256: b09587597c8c79e825016c1af6ffa7fdf4a8e34c61c7752bd9bbd06cd809684e
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The ML classifier also strongly flagged this PDF as malicious. The embedded URL points to a suspicious domain, suggesting the document's primary purpose is to lure the user to a malicious site. No scripts were extracted, but the presence of malicious links is sufficient evidence for this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

Heuristics 4

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://gettraff.ru/123?utm_term=ayame+sohma+age
    • https://raboxodibol.weebly.com/uploads/1/3/4/0/134096122/ritaguf_mojorutu_zimixeziweso_rizajowugotav.pdf
    • https://mafoguwof.weebly.com/uploads/1/3/1/4/131438304/ganeke-busavizugupiwo-zugurepa-xobari.pdf
    • https://static.s123-cdn-static.com/uploads/4369331/normal_5fdf1208b6168.pdf
    • https://static.s123-cdn-static.com/uploads/4481825/normal_5fc610266a35e.pdf
    • https://tanaxigurav.weebly.com/uploads/1/3/4/2/134266775/4c2cb17da89382.pdf
    • https://pijafajabivigin.weebly.com/uploads/1/3/4/6/134635516/fexitiv.pdf
    • https://rerutafedebe.weebly.com/uploads/1/3/2/8/132815298/lamorob_sakorusa.pdf
    • https://gepobuxew.weebly.com/uploads/1/3/1/0/131070920/daa0e7dbf5a.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/b7e74a91-c2ed-407d-8e43-a07e74b6bd43/35432118294.pdf
    • https://uploads.strikinglycdn.com/files/b7fe2ef6-0db5-4e44-872f-674a4b05e1f8/grave_encounters_1_full_movie_in_hin.pdf
    • https://uploads.strikinglycdn.com/files/1519ea24-cb95-443d-a380-12873df9fcd7/garmin_gpsmap_76_manual_free.pdf
    • https://uploads.strikinglycdn.com/files/b6f16489-db0b-4ec6-af07-da89c8c6f88a/oracin_de_la_sangre_preciosa_de_nuestro_seor_jesucristo.pdf
    • https://uploads.strikinglycdn.com/files/65866da8-349b-493e-9599-50bf8ede5258/64180905959.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002045d.bin
3b3fcb2e55b8887011348825968d0d791da42b8da58570b8fe8b39ba878590dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2045D 21068 bytes
font_01_sfnt_off0002462e.bin
2f9712c1b5ec78958fe58294457221f313e40298c402569d0e52bf1518a894e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2462E 5064 bytes
font_02_sfnt_off0002574b.bin
b0e9b710300e41440589201ab0124afce0e4f3bf01c5ee0b82fa1bfe77de654d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2574B 4352 bytes
font_03_sfnt_off00026574.bin
1df9c8044b118a8f3a34b49fb73a02be38ca346b2b2c735434fc009c26262193		 pdf-font-stream PDF embedded font (sfnt) at offset 0x26574 12528 bytes
font_04_sfnt_off00028e9e.bin
ca0bb856d51d4c440eb4e48db524e4b4a87bf80294704eab3ae97752e74326e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28E9E 16132 bytes

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