Malicious PDF — malware analysis report

Static analysis result for SHA-256 279ea7e8a05fe4fd…

MALICIOUS

PDF

71.3 KB Created: 2021-06-08 03:22:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: a01fa1ef91147e25ec7126a85100b0da SHA-1: 5a00c2d6bdcb8b1732732d60b570455814db6435 SHA-256: 279ea7e8a05fe4fdf8a23a4e8e249c85a65a0980ae8056f8765563196b16c236
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or social engineering attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. The document body, though heavily obfuscated, contains text related to 'how to use laplink pcmover', suggesting a lure to a malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://queure.ru/pbw?utm_term=how+to+use+laplink+pcmover PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4410443/normal_606db9284e14b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365567/normal_601490c63098b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376629/normal_601958495b6e0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369323/normal_5fe7bf8e41aed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404987/normal_60bac8b2572b4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427523/normal_602a25070cfe9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452385/normal_601ad233c00ab.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481520/normal_5fe152bf43836.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gaxoxim.pbworks.com/f/sanky_panky_2_hd.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/654b55e8-fb45-43a0-af56-e5d2192565a3/journey_to_the_center_of_the_earth_1959_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/237af6de-1185-48e2-b96a-801f65165017/18068940178.pdfIn PDF document text
    • http://mutatalibo.pbworks.com/w/file/fetch/144652407/how_to_get_free_skins_in_fortnite_nintendo_switch_no_human_verification.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/baf76b0a-897f-4e7b-8984-bc4baf82f3e8/movie_based_on_the_love_dare.pdfIn PDF document text
    • http://fetinaduv.pbworks.com/f/97650148942.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4d197e6-c0d6-4798-8b72-978e0525a68d/96332685664.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7195712-bdf4-4820-9392-1579ad960076/hello_adele_song_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/715a971b-0472-489d-8c8a-4055e1814940/ac_repairing_guide_hindi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd69cfc2-442e-49f1-bc5f-37e8e952ed43/ranco_etc_2_stage.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27f98d75-2b88-43e8-afde-8d3a04e89105/estudios_biblicos_adventistas_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77eef988-4acd-41a2-b8ec-4f6df0093cda/amelie_comptine_dun_autre_t_guitar_tab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ade6d2a-f2a8-4d7d-8b9b-4a9cd8888280/how_to_activate_my_windows_10_pro_for_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59c0e179-6b35-4e8c-a2c6-2e9d63a570e8/the_vampire_diaries_logo_svg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81d861e5-daf1-47e5-bd8f-20030bd4af6a/fogunezugaxozozipax.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.

FilenameKindSourceSize
font_00_sfnt_off0000d8ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8ED 5256 bytes
SHA-256: 7eeb927808d43b4ea067c2a928d3ad58ec2718f8fd4c6200ebea055d52a4b80f
font_01_sfnt_off0000eacf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEACF 10860 bytes
SHA-256: eec903c5d7c99a77a301f7aebc668b6a5f73d9914b4562570fb5c45f818410a3

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