Malicious PDF — malware analysis report

Static analysis result for SHA-256 12059f2d02747a73…

MALICIOUS

PDF

147.1 KB Created: 2021-04-05 16:57:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7a742c842361aee177372f0858176b45 SHA-1: 4eff620bc243a23fd1743d2a116bdb1d661b4926 SHA-256: 12059f2d02747a73535903bc7b5bbe113a6b998992541e8f68f87fe49e66256b
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, and contains an embedded URI pointing to a suspicious domain. The document body, though heavily obfuscated, suggests a lure related to scientific research, likely intended to trick users into visiting the external URL. No scripts were extracted, but the presence of an external URI strongly suggests a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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://vilenefex.ru/award?keyword=famous+scientists+and+their+inventions+in+biology+pdf
    • http://bcpreactiva-enlinea.com/korg_sq-10_miniagvf7.pdf
    • http://lnstagram-verificationbadgeform.com/best_interior_design_schools_utah5y1u3.pdf
    • http://study-english-05.site/34460375756mrsd0.pdf
    • http://moitender.org/script_editor_google_sheets7z2ho.pdf
    • https://static.s123-cdn-static.com/uploads/4447263/normal_5fdd9890b1b0a.pdf
    • https://cdn-cms.f-static.net/uploads/4392193/normal_6036daeaeb92b.pdf
    • https://static.s123-cdn-static.com/uploads/4500425/normal_5feb246427dc1.pdf
    • https://cdn-cms.f-static.net/uploads/4464297/normal_60523826d9fd2.pdf
    • https://wedutigumufezeb.weebly.com/uploads/1/3/4/6/134659425/0e6ce56567c6.pdf
    • https://cdn-cms.f-static.net/uploads/4414159/normal_60580e417ad69.pdf
    • http://afracheat1.xyz/164931382278pzq2.pdf
    • https://jakipafowikodo.weebly.com/uploads/1/3/1/0/131070805/fc7caa38d893.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/sefiwegegagu/roxiwek.pdf
    • https://s3.amazonaws.com/wixanarer/73535855207.pdf
    • https://uploads.strikinglycdn.com/files/548bc38a-f3db-444c-84cd-9c66f9c94e1e/39479157566.pdf
    • https://s3.amazonaws.com/pusolefosex/36259451630.pdf
    • https://s3.amazonaws.com/nagudo/3070329369.pdf
    • https://s3.amazonaws.com/dugibabafod/bodoni_175_font_free.pdf
    • http://buwefewi.epizy.com/williams_hematology_9e_free_download.pdf
    • https://uploads.strikinglycdn.com/files/61d2bcc7-f6a0-4b44-b525-f6b7bb01745e/87846386662.pdf
    • https://uploads.strikinglycdn.com/files/181575c1-aeaf-42bf-b269-dc95f3a06a14/parallel_lines_and_angles_worksheet_answer_key.pdf
    • http://ladekaserum.epizy.com/16386983794.pdf
    • http://tanamumejoxa.epizy.com/vampire_diaries_merch_stefan.pdf
    • http://varupijijajeb.rf.gd/5278351087.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001f485.bin
2971dc66cc1403e5329de84e9976bb4f46f4a2c811215872c9498915ad32901f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1F485 5708 bytes
font_01_sfnt_off000207cc.bin
26b5504eb3f69102dbd263b4c955f98a145f77523ec98d0f8a1fc2f9ca9f7c68		 pdf-font-stream PDF embedded font (sfnt) at offset 0x207CC 13664 bytes
font_02_sfnt_off00022f96.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x22F96 4324 bytes

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