Malicious PDF — malware analysis report

Static analysis result for SHA-256 94d202a5914b04a3…

MALICIOUS

PDF

76.8 KB Created: 2021-03-28 11:28:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: deee6fdf9a89981c118c779ff6d5176d SHA-1: 7e3d45909ca8d6915c2a597e75c9017d40bdf08c SHA-256: 94d202a5914b04a3daace5fd647a8448bc6bc1929b2f3cee68e63bcaf55b587f
96 Risk Score

Malware Insights

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

The file is a PDF document flagged as malicious by ML classifiers and ClamAV. It contains an embedded URI pointing to a suspicious domain, which is likely intended to host a malicious payload or redirect the user to a phishing site. The document body and metadata also contain references to this URL, reinforcing the phishing attempt.

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://midufefew.ru/wix?keyword=inoue+bleach+annoying
    • https://static.s123-cdn-static.com/uploads/4386079/normal_5fe29a80cb90c.pdf
    • http://nuveclovet.xyz/minupepujusabwghc.pdf
    • http://idealicait.website/10293510377j2i2f.pdf
    • http://wisitens.online/board_games_for_3_year_olds_at_home6uuqd.pdf
    • http://123dutch.com/19192550503qya63.pdf
    • http://handler-autoscout24.com/arithmetic_number_system_questions_and_answers4q1l6.pdf
    • http://about-fb-support.com/12618637587lccgr.pdf
    • http://guferesuzas.22web.org/turirebutenotu.pdf
    • http://eslivdrug.space/partituras_de_banda_marcial02unj.pdf
    • http://expo-kit.ru/how_to_be_good_at_actingm1rgn.pdf
    • https://cdn-cms.f-static.net/uploads/4408343/normal_604d32f8cc985.pdf
    • https://cdn-cms.f-static.net/uploads/4414687/normal_6029dcca3f431.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/8d459fc0-7ea9-49aa-b88b-c8eaf291dcae/how_many_books_are_in_the_green_mile_series.pdf
    • http://nalobilemuzun.epizy.com/fuxew.pdf
    • https://uploads.strikinglycdn.com/files/b56ccb77-724a-4fc8-9070-5d8cd37d2c73/kadawad.pdf
    • https://s3.amazonaws.com/silubebebefuju/94387388740.pdf
    • http://vokulokunupada.epizy.com/9718870497.pdf
    • https://uploads.strikinglycdn.com/files/18c603fc-745f-49b4-b1c0-906a003d3124/how_to_read_a_book_the_classic_guide_to_intelligent_reading_mortimer_j._adler.pdf
    • https://s3.amazonaws.com/kefefetafij/fososexotivukajazij.pdf
    • https://s3.amazonaws.com/gezetega/solid_waste_disposal_management.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dbef.bin
13e2c3212a7736d2575c2db2e47fa6f3cc6f696c1d05eea3cb027ebe53395e09
pdf-font-stream PDF embedded font (sfnt) at offset 0xDBEF 4964 bytes
font_01_sfnt_off0000ece0.bin
a72128e623aa828a6aaab097152e629c554ad3e56f52e072c2fc53dbfd16597c
pdf-font-stream PDF embedded font (sfnt) at offset 0xECE0 10584 bytes
font_02_sfnt_off0001115c.bin
080e11f5b00bedb5a752ee0d77e7ba98c64adfb1f7c772d88018f6ebb738d111
pdf-font-stream PDF embedded font (sfnt) at offset 0x1115C 16064 bytes