Malicious PDF — malware analysis report

Static analysis result for SHA-256 adad7dd00f62a867…

MALICIOUS

PDF

233.3 KB Created: 2021-03-22 06:40:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 934b6265748941364256c435a371f961 SHA-1: 203ecc580480b322d68f2725e6854bcd34f61fac SHA-256: adad7dd00f62a86775eda6fd6eac4d25bf9cc2de7868d47905b290f391817da1
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, identified by both heuristics and ClamAV as malicious. The ML classifier also flagged the PDF with high confidence. While the document body is heavily obfuscated, the presence of the external URI strongly suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9765

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://midufefew.ru/strik?utm_term=sat+test+means+in+hindi PDF link annotation
    • https://pitejuxupukure.weebly.com/uploads/1/3/4/5/134500798/xujaxifetu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457272/normal_5ff81a35e3253.pdfIn PDF document text
    • https://zawivipesanupi.weebly.com/uploads/1/3/4/7/134724715/e482b0b569.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369491/normal_6024178f6f46a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423137/normal_602585b12e86f.pdfIn PDF document text
    • http://widonatozeg.mypressonline.com/converter_para_musicxml_online.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368781/normal_6056f59bf4177.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473637/normal_5fc585760b305.pdfIn PDF document text
    • https://japarikadag.weebly.com/uploads/1/3/4/1/134108792/7016951.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454977/normal_5ffddb5e2c1fa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369499/normal_5ff772b65ebdc.pdfIn PDF document text
    • https://vefamomapebimid.weebly.com/uploads/1/3/1/4/131406391/mosuguvusope.pdfIn PDF document text
    • http://fedorahosted.org/lohitIn 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/945540de-2853-47a4-a423-7f79ce1ac528/garmin_etrex_12_channel_gps_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/kavifunaruvi/522524499.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6049f21f-ab41-41fc-998c-6674b5694abf/how_to_download_rslogix_5000_emulator.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fdc98832-ef81-4b7d-878c-bfee7925d670/32148259751.pdfIn PDF document text
    • https://s3.amazonaws.com/votubukaxogilix/vatawebo.pdfIn PDF document text
    • http://jokosen.atwebpages.com/28579543378.pdfIn PDF document text
    • http://pimoxonevuwewax.atwebpages.com/ayyappa_patalu_telugu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf78bcb1-4613-4b46-84e8-83c60ba8ef16/44482130746.pdfIn PDF document text
    • https://s3.amazonaws.com/suxuzubojut/segumuwomidil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2226e27e-627a-4619-8e3d-a127d4f93e6b/dragon_age_origins_most_fun_class_reddit.pdfIn PDF document text
    • http://voturugivorajop.onlinewebshop.net/3094949241.pdfIn PDF document text
    • https://s3.amazonaws.com/zesotat/coordinate_geometry_area_and_perimeter_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/daniwodug/fatixizo.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off0003402a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3402A 26080 bytes
SHA-256: 27f2a87298ea1e51ab61b50fbe317f221d46e70c83933228c5ea8229990c0995
font_00_sfnt_off0002fac3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FAC3 5040 bytes
SHA-256: f083d59db53602688789c939478540f3ede2670b08644524c77dd77c90c05212
font_01_sfnt_off00030bbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30BBD 3720 bytes
SHA-256: d0c9e33916e9e64e42e31bcf0d345f6c2fcd41735b1a34df0119bd0eb1094281
font_02_sfnt_off00031721.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31721 11972 bytes
SHA-256: 7d1a7a79916f28e20d9f72e7413d28ca7d0bcb545aff9bc14f4832b6239ca628
font_04_sfnt_off000386d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x386D8 6112 bytes
SHA-256: e267c248b2ce7d27eaa74a59b52ce6f4972f93190f10c30d49c64bd6f7ff2e94