Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6e0e2f941fead4e…

MALICIOUS

PDF

73.8 KB Created: 2021-03-09 10:57:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: b1eb1a9b2ffa1fced7bbf498e96175d8 SHA-1: 2eb6201d3042318fc21b44cd20f33ee5bd70a604 SHA-256: a6e0e2f941fead4e51cc357d077eb983bc0e0892e54cfe3db8d0dca347ce8e00
96 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, with a high risk score. It contains an embedded external URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, suggests a lure related to 'Business English in PDF'. No scripts were extracted, but the presence of external URIs and the overall malicious verdict strongly indicate a phishing or malware distribution attempt.

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://bologen.ru/award?keyword=business+english+in+pdf PDF link annotation
    • https://cdn.sqhk.co/mijajijem/IijPAN1/hello_neighbor_alpha_2_basement_trailer.pdfIn PDF document text
    • https://cdn.sqhk.co/foroboreb/gcudhhS/red_blue_gold_balloon_garland.pdfIn PDF document text
    • https://cdn.sqhk.co/dakagugi/iaow4jf/navigak.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391634/normal_5ff9f396cf5c2.pdfIn PDF document text
    • https://cdn.sqhk.co/fumamimed/dhcgfhc/zombs_royale_diamond_hack_pc.pdfIn PDF document text
    • http://vubitim.sportsontheweb.net/hamilton_anxiety_and_depression_scale_scoring.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420224/normal_600367a37614c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493200/normal_6028239943115.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378155/normal_6018bc3aa1c20.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366668/normal_5fde8a6951ab8.pdfIn PDF document text
    • https://cdn.sqhk.co/muzolorakow/LXbYiji/samsung_internet_browser_apk_beta.pdfIn PDF document text
    • https://cdn.sqhk.co/zejejofe/bShjNjh/unicorn_photography_brini.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490263/normal_6004c8415a873.pdfIn PDF document text
    • https://cdn.sqhk.co/rujiwujik/gchfahc/black_hair_salons_near_me_now.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zudupaxub.myartsonline.com/do_ikea_have_king_beds.pdfIn PDF document text
    • http://nivuzujanux.myartsonline.com/raxoxoboxeruxe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b16032d3-9aa1-4446-afd2-3e2d0eb69324/la_biblia_hablada_exodo_25.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8912cbbf-401f-41a4-8ea1-f79a802cba67/lomedidevilinezisit.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_off0000e64c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE64C 5044 bytes
SHA-256: 0cf6d6d2f84750b615e90ab22df1e78b229f2cb12c3cc3fd76c60e0ed5a6eac6
font_01_sfnt_off0000f780.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF780 10304 bytes
SHA-256: 77abe0ac2a6f044bcb163abc2ea0235d58aa39bf9cbeb0e08ee30f67d6c421c5

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