Malicious PDF — malware analysis report

Static analysis result for SHA-256 f46f99fee3f50925…

MALICIOUS

PDF

224.7 KB Created: 2021-04-19 23:12:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 92722344ed746d1ddcb20a62f7fc6e12 SHA-1: 30545465573f11342eda97d9854c8fc116aaf5ab SHA-256: f46f99fee3f5092547485c51b00799fa765acf944ba5ce7677c629a83273a28e
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. While no scripts were explicitly extracted, the presence of an external URI and the overall malicious classification suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9374

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://dafemum.ru/strik?utm_term=cormyr+tearing+of+the+weave+pdf+download
    • https://cdn-cms.f-static.net/uploads/4415077/normal_6069f6c8724da.pdf
    • https://static.s123-cdn-static.com/uploads/4498376/normal_5fcf4561c7e82.pdf
    • https://cdn-cms.f-static.net/uploads/4377410/normal_606e298aca4db.pdf
    • https://cdn.sqhk.co/betewulo/dqzjg3m/mymahdi_mp3_player_with_bluetooth_5._0.pdf
    • http://fibisazorowax.mypressonline.com/zobiruxawus.pdf
    • https://cdn-cms.f-static.net/uploads/4407781/normal_600b39a3add2f.pdf
    • https://cdn.sqhk.co/xubewarow/h2Ljcge/schema_electrique_moteur_asynchrone_triphase.pdf
    • https://static.s123-cdn-static.com/uploads/4446158/normal_5ff65acdafba5.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/4848c318-8554-4659-ac65-de6e5b20bb0e/rexisisuxaxujisewilogosa.pdf
    • https://46d16763-6c5f-4e19-aa2c-3f4071fcbec2.filesusr.com/ugd/26f730_9027fbbd137e486c9a63bdc5b54fc387.pdf?index=true
    • https://uploads.strikinglycdn.com/files/9bef6c65-2060-41d4-a545-563895905926/difom.pdf
    • https://uploads.strikinglycdn.com/files/1f2c5e53-a643-4bac-9314-82d30174de74/9594176145.pdf
    • https://uploads.strikinglycdn.com/files/28f095f6-57a8-40b2-86ed-15dc9a2b3e2c/waxazefodonarakikudemavog.pdf
    • https://2ea3657d-1c4c-40dd-8491-58aeeb8dc933.filesusr.com/ugd/18a85a_b90ac5dba89e4cb6ac0c6c4387d600c0.pdf?index=true
    • https://uploads.strikinglycdn.com/files/d80bd90c-7f75-401d-819c-083f9c22c27e/plantronics_m180_headset.pdf
    • https://uploads.strikinglycdn.com/files/1b4e61d8-047d-4e16-8d22-7f2acff3aa8d/72383417163.pdf
    • https://36535336-4f9e-4c0a-b1ad-3385cb5d4299.filesusr.com/ugd/15ebe2_b08326c74ced43c89c0a723d2e2d70d5.pdf?index=true
    • https://ff87c8b5-ca28-4ac0-94ba-218234037d87.filesusr.com/ugd/1d4e4f_d39db9481e6941e49f528561ac4e67a6.pdf?index=true
    • https://uploads.strikinglycdn.com/files/a97c3ab3-121a-4122-8fe9-072cc30c069d/16951796972.pdf
    • https://uploads.strikinglycdn.com/files/a5566f6b-56df-49b0-b191-c93beaf26753/how_to_get_faster_at_sweep_picking.pdf
    • https://uploads.strikinglycdn.com/files/c854c709-7fe4-4444-a598-9e0277075c4c/pajivugujo.pdf
    • http://guwaxilajoxeza.onlinewebshop.net/94222770455.pdf
    • https://uploads.strikinglycdn.com/files/6e54cc90-4a00-457d-adbc-fc5b066956b5/7th_class_maths_simple_equations_exercise_3.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0003170e.bin
d6169705a98500fbacf868ecbe3a4ec1053cd421b576889c8e6b5815b68da18b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3170E 5344 bytes
font_01_sfnt_off0003292b.bin
760fc42b59817be2383b4dea2f4d87e301b15af565ba0fb74bdb665a4a0a079a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3292B 11364 bytes
font_02_sfnt_off00034fde.bin
532315dfdc59b350d447ad91845dd8cc72a836e684f536ab9a4305dc5b53fb8e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x34FDE 16204 bytes
font_03_sfnt_off0003650e.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3650E 4324 bytes

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