Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbdc257cdd6d6e2f…

MALICIOUS

PDF

77.8 KB Created: 2021-01-24 17:46:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 391171b5213f1da8f85ea9aabb9f0b87 SHA-1: d3c82eced2b5ab9d008042ccb8aa5e24f3276dd8 SHA-256: fbdc257cdd6d6e2fdb9230d3505c1b5fdedf987a758be99138c9d0ea8116f0da
96 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The document contains an embedded URI pointing to a suspicious domain, likely intended to trick the user into visiting a phishing or malware distribution site. The presence of embedded URLs and the overall classification suggest it is a phishing lure, potentially leading to further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://maypoin.ru/123?utm_term=what+is+a+sutler PDF link annotation
    • http://opticsystem.website/gedixonovemasoqb6jr.pdfIn PDF document text
    • http://nisisigewu.iblogger.org/22991066923.pdfIn PDF document text
    • https://cdn.sqhk.co/xarozowuzosa/uoBhiSS/perfect_easy_piano_chords_letters.pdfIn PDF document text
    • https://cdn.sqhk.co/poxufape/dNwdghF/33552858045.pdfIn PDF document text
    • http://erogan24.website/89432516052d3ce4.pdfIn PDF document text
    • http://electrumwallet.buzz/seesaw_class_vs_family_appirxmb.pdfIn PDF document text
    • http://mifvideo.space/wokipevimenadisuvezuruwej3ylv8.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/jupoti/gugifepapifunozofiroxog.pdfIn PDF document text
    • https://s3.amazonaws.com/bufipevuril/ruretutufageteris.pdfIn PDF document text
    • https://s3.amazonaws.com/genijusemu/xiwoxusuwu.pdfIn PDF document text
    • https://s3.amazonaws.com/patotale/boone_and_crockett_elk_score_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/tixeligufokup/poe_syndicate_mastermind_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/kujesulad/yakuza_5_trophy_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/masevewi/1413089117.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dba8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBA8 2864 bytes
SHA-256: 9117bbf316fc2ea3b6e817c786b4239c6e639bc9bbc85041159577d557ec1aa5
font_01_sfnt_off0000e5d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5D8 4452 bytes
SHA-256: 50da251c9fc60f622d268db4918f3675292f543d7f9b64fbc46a892c28c8cccc
font_02_sfnt_off0000f504.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF504 11504 bytes
SHA-256: 54dc9a9ca53722da90a30ebd313a88aff39312aa2a25bdbc5ba995e6b1cf2256
font_03_sfnt_off00011bd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BD1 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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