Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7d0875278a39351…

MALICIOUS

PDF

117.3 KB Created: 2021-01-01 23:15:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 8e3e32fbd8d61ea3a8ea65e72201cb8c SHA-1: 9338c261909c03d48f61dffe1b148917b96ded0b SHA-256: d7d0875278a39351830facdb84727a437b8958ecf76113c6571b21c9988d1e9d
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that points to a suspicious domain, likely intended to redirect the user to a malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent, consistent with phishing or malware delivery. No scripts were extracted, but the presence of the external URI is a primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafffe.ru/wb?keyword=zombie%20attack%20army PDF link annotation
    • https://cdn.sqhk.co/vakiduju/mUjj4ub/vedekuwexaguxawemedot.pdfIn PDF document text
    • https://cdn.sqhk.co/tovisegag/ifihUjc/xibas.pdfIn PDF document text
    • https://cdn.sqhk.co/xafiguzi/hfv22hi/punch_ball_jump_unblocked.pdfIn PDF document text
    • https://cdn.sqhk.co/jumifokujuje/hK4gfBU/driving_simulator_pc_online_free.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3181678-8503-43d3-b744-879810bde38d/nazusapuzodoja.pdfIn PDF document text
    • https://s3.amazonaws.com/takurugilij/rixomakukul.pdfIn PDF document text
    • https://s3.amazonaws.com/nefunupu/azure_blob_large_files.pdfIn PDF document text
    • https://s3.amazonaws.com/varoximu/cs_1._6_parachute_plugin_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab9d50c1-40f6-4062-a85e-103c1a2b64c1/defisijeb.pdfIn PDF document text
    • https://s3.amazonaws.com/marimejerebo/96840076652.pdfIn PDF document text
    • https://s3.amazonaws.com/wusigipufuvowix/songflower_buff_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/lupebesu/ec_council_certified_ethical_hacker_exam_312_50.pdfIn PDF document text
    • https://s3.amazonaws.com/gixirojozogufux/chinese_keyboard_android_apk.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_off00019049.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19049 4996 bytes
SHA-256: 02c89b0a2db22280b29945a16abbefbf9a6da9cec40d78446fbf69c91e31ef2f
font_01_sfnt_off0001a147.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A147 11364 bytes
SHA-256: ba9e4ecf684f7f23007477cd9896e84758614163dbd8fdaa7810ced4e31a00b1

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