Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecaab6461c6f5004…

MALICIOUS

PDF

94.4 KB Created: 2021-03-08 17:29:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c301c74ed8c27d8323e3cd7ad33ed05 SHA-1: ec4b9fa98cdaf03d5e957b9d0908be818ea0c03a SHA-256: ecaab6461c6f5004d2d2d96f6cdd810c983893590570f468d3dc824339336d55
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI that redirects to a suspicious domain, masquerading as a search result for a popular game topic. ClamAV and an ML classifier flagged this PDF as malicious, indicating a phishing or trojan delivery attempt. No scripts were extracted, but the presence of a malicious URI strongly suggests the document's intent is to redirect users to a harmful site.

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://dafemum.ru/wix?keyword=ff14+low+level+crafting+rotation+5.1
    • http://jobesagaponapa.22web.org/49663976840.pdf
    • http://xidakuxekon.22web.org/mikuxugarovu.pdf
    • http://rolevuses.iblogger.org/99902512546.pdf
    • http://fodekofuxuvum.sportsontheweb.net/magic_tree_house_book_list_merlin_mission.pdf
    • http://lubenoredeji.mypressonline.com/50240881563.pdf
    • http://bawimip.sportsontheweb.net/36899137807.pdf
    • https://cdn-cms.f-static.net/uploads/4380854/normal_5fd9f5ef2f5c9.pdf
    • https://static.s123-cdn-static.com/uploads/4417997/normal_5fc5b6da866ff.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://wutaletuf.rf.gd/weragikijekalavuv.pdf
    • http://vilumepidiwego.myartsonline.com/98556453895.pdf
    • https://s3.amazonaws.com/sorogamat/hp_p2035_printer_specifications.pdf
    • https://s3.amazonaws.com/mejigavukolu/zeligimasovafufurireriw.pdf
    • http://ditajizuru.rf.gd/fofumomugemoragu.pdf
    • https://s3.amazonaws.com/gurowozenupifi/dizariforikaxira.pdf
    • https://s3.amazonaws.com/kisimujuk/free_java_football_games.pdf
    • https://s3.amazonaws.com/vunizi/fupuzubakew.pdf
    • http://lejiletuvasipib.onlinewebshop.net/echo_srm_225_weed_eater_string_size.pdf
    • https://s3.amazonaws.com/debiwelof/fejabanafojewawu.pdf
    • https://s3.amazonaws.com/fujadabez/coeliac_disease_diet.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_off00011e10.bin
f20696e4b1e820882ea65bae9c4e82748b3d4f4bc9b8490913f344a94fa080fa
pdf-font-stream PDF embedded font (sfnt) at offset 0x11E10 5276 bytes
font_01_sfnt_off00013044.bin
eff769a55ee321617837dabf5a84f3c71c5f10f0eeee854105d522700c8303a6
pdf-font-stream PDF embedded font (sfnt) at offset 0x13044 10888 bytes
font_02_sfnt_off0001556a.bin
e9fe716c2abc985b12a899a49d5539e4e8be1b56d50c083b30290d85a2a7c848
pdf-font-stream PDF embedded font (sfnt) at offset 0x1556A 16092 bytes