Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd881e1f38fbc102…

MALICIOUS

PDF

79.5 KB Created: 2021-03-15 05:11:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 294045b5897698249bf98d5111e6ce4c SHA-1: 5adf8c30fcbdaece07e27c62790083bf9fd94576 SHA-256: dd881e1f38fbc102e0298bf2503b06c60335b923f63ecd1a91d3fa6be88409af
96 Risk Score

Malware Insights

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

The PDF file 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. The document body, though partially obfuscated, suggests a lure related to downloading a trading application, aligning with phishing tactics.

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://jumiwimov.ru/strik?utm_term=how+to+download+thinkorswim+on+ipad PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4405895/normal_5ff7087b8ccbe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459341/normal_5fce57067a4bf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380083/normal_60184f893a36a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471686/normal_5fedd658b28be.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478383/normal_600a4f2a5155a.pdfIn PDF document text
    • http://paxabak.mypressonline.com/how_many_chapters_in_the_new_testament.pdfIn PDF document text
    • http://mitutepoka.medianewsonline.com/michigan_medicaid_id_number_lookup.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387815/normal_60467640d0c58.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444853/normal_5fe898525995b.pdfIn PDF document text
    • http://kazimibi.getenjoyment.net/video_games_for_toddlers_to_play.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373753/normal_602085c8018d9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/sizadagazagaj/qcy_t5_malaysia_price.pdfIn PDF document text
    • https://s3.amazonaws.com/bivanud/muvitadelug.pdfIn PDF document text
    • https://s3.amazonaws.com/kavalukato/agricultural_machinery_market.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/938386cb-7775-42ac-8f3c-a33124540103/93185631812.pdfIn PDF document text
    • https://s3.amazonaws.com/kakef/99333722900.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3415b0ce-fb55-44f9-a68d-369989fab3b8/my_asus_laptop_says_preparing_automatic_repair.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC9D 4984 bytes
SHA-256: cd4f9161c75d4c7d766c11d0b304335c031c32c7b442070d70357d2d29333f14
font_01_sfnt_off0000fd5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD5D 10936 bytes
SHA-256: 0170fa69baf3644d9d02f90fbb4a747857e951532e5b76dd77db5eaefc882487
font_02_sfnt_off000122e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122E3 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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