Malicious PDF — malware analysis report

Static analysis result for SHA-256 928c94f704b3084e…

MALICIOUS

PDF

123.1 KB Created: 2021-03-09 01:18:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 47c2f50697906298d251a2da7d3cd48d SHA-1: e7a4897a9fb528f870afcefa0ecff08ca8267799 SHA-256: 928c94f704b3084e6eb41cc506416f4954b98cca4d33d873cb34a487124551b2
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious content, potentially for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/award?keyword=tafsir+al+quran+english+pdf PDF link annotation
    • http://1eyvgo.xyz/lotukopug8ok3e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375196/normal_601b9d76100da.pdfIn PDF document text
    • http://naturwows.space/versa_lite_fitbit_watch_bandsxt9a5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490547/normal_6005dffd2fad3.pdfIn PDF document text
    • http://com-connexion.xyz/how_to_screenshot_on_iphone_6_s_pluszby3s.pdfIn PDF document text
    • https://zizusufake.weebly.com/uploads/1/3/4/6/134646877/63c552e98e.pdfIn PDF document text
    • http://nat-fru.space/644500401494mskz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487618/normal_5fe4ff0a42221.pdfIn PDF document text
    • https://tivubolo.weebly.com/uploads/1/3/1/8/131857038/fcc47989.pdfIn PDF document text
    • http://helper-badges.com/26005798777zhz3e.pdfIn PDF document text
    • http://olymptrade.buzz/steel_column_design_worked_example_eurocodebh6fz.pdfIn PDF document text
    • http://beautysale.site/84698586300pwawt.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414679/normal_602183f04c0f6.pdfIn PDF document text
    • http://redit.fun/totevokutolomejovun2x3q.pdfIn PDF document text
    • http://construt.site/autocad_tutorial_video_free_download_in_hindi42iip.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368964/normal_601c6a6bebdbe.pdfIn PDF document text
    • http://reduslimitaly-ufficiale.site/mofigl8rm6.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/pazovugal/batman_hush_movie_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/vobuturinivi/46871951836.pdfIn PDF document text
    • https://s3.amazonaws.com/wemofodi/24439187387.pdfIn PDF document text
    • https://s3.amazonaws.com/sitozi/rexinituberewawasijogatol.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_007_off0001a854.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1A854 22008 bytes
SHA-256: 2dc964fdba99d003fb0f14516a3d3942e1603c8c6276eff9e132885d16067b87
font_00_sfnt_off0001532c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1532C 5068 bytes
SHA-256: 59789a5abcc55c9af25d73edfdd8903896017a0c7dbc5ba66e5065a1e76e43e9
font_01_sfnt_off0001643b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1643B 7144 bytes
SHA-256: f30500ce56b7c24011acf6d9b7614be2d60a2a456e201a7c54a574783cfc672f
font_02_sfnt_off00017b3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17B3E 14460 bytes
SHA-256: 2c23564b012261cd10d899913e95e6d07d2e3c2d8f7d291d87029fe4a2262275
font_04_sfnt_off0001cf10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1CF10 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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