Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1527393ca04fbbd…

MALICIOUS

PDF

74.4 KB Created: 2020-12-31 16:06:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 64c98a537831a48bb3f9ed8632163aae SHA-1: 8a43161e9c9c0710ad78b3d0c12aae6c45dd1b8f SHA-256: e1527393ca04fbbd3b8eb5396791ad0a3ab394438904615850737240370c7349
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The document body, though partially corrupted, contains references to "Knives out 2020" and an external URL, suggesting a phishing or social engineering lure. The presence of embedded URLs further supports this, with one URL pointing to a suspicious domain that is likely part of the attack chain.

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://trafficel.ru/strik?utm_term=knives+out+2020 PDF link annotation
    • https://cdn.sqhk.co/pemejurove/ehj5UJw/gevenisagawatitiwixomot.pdfIn PDF document text
    • https://cdn.sqhk.co/dimumaneda/hr0uieH/57032183166.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378620/normal_5f8a6e879a16a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483837/normal_5fd795464081b.pdfIn PDF document text
    • https://cdn.sqhk.co/fawabanof/cEZiigf/spiral_jump_ball_program.pdfIn PDF document text
    • https://cdn.sqhk.co/vikoparif/jhdhcja/real_followers_likes_booster_for_ig_photos.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/fbd39051-d5ae-4062-9009-13ce7e4924ee/viril.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34c6e69d-c689-4b4c-9719-dc0aae14081a/wutox.pdfIn PDF document text
    • https://s3.amazonaws.com/tumasun/nims_200_c_final_exam_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/welanisowari/best_stock_android_smartphone_under_12000.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatofubote/pugalidapunagotikupikunuk.pdfIn PDF document text
    • https://s3.amazonaws.com/votubukaxogilix/63943421259.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2220911c-ebd0-415f-8e1b-00d9ae1a7d9e/7865049277.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80c0d628-5e62-4c20-9081-7724096c91ad/time_flies_when_youre_having_fun_origin.pdfIn PDF document text
    • https://s3.amazonaws.com/wisuw/kafutuwepis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/baf06810-4f2e-489e-9a0d-17c52472c244/heroes_of_warfare_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_off0000e79d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE79D 4644 bytes
SHA-256: 89c2fe80efc7654d5f8aef95191c5a349603263078e89930e90820d93660023c
font_01_sfnt_off0000f795.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF795 10976 bytes
SHA-256: cb8857aa86327b829c3b9b1ff18bfe2e0955403716bba14b17a8d8a845fba4e6

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