Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea121ca04ad680db…

MALICIOUS

PDF

79.9 KB Created: 2021-02-18 00:42:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 1233395978ca540510c9fb10aa6852a0 SHA-1: 45b276042dba9178115a68e40503a289aa24f031 SHA-256: ea121ca04ad680dbe1e68aa15954c66a371d4892073ef26e4837010de7f2780c
154 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://yafferge.ru/wix?keyword=swtor+dread+fortress+solo In PDF document text
    • http://dsv-trening.ru/cnil_cookie_guidelines0xj6w.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484363/normal_5ff0dc9506f2d.pdfIn PDF document text
    • http://twirlini.com/fallout_4_covenant_safe_test_answersd7kwb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449984/normal_5ff75afc2e522.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497095/normal_5fe3dfef9c4bc.pdfIn PDF document text
    • http://civiliscmq.online/adding_fractions_worksheets_grade_4ae3xh.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456660/normal_6013f53968a2a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421354/normal_5ff944d946bd7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/regufojalojaza/civilization_6_war_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/pegozegi/captain_america_shield_hd_wallpaper_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/pisedij/beta_film_audio_song.pdfIn PDF document text
    • https://s3.amazonaws.com/gonima/kametulebusuxam.pdfIn PDF document text
    • https://s3.amazonaws.com/pazatuv/77729494878.pdfIn PDF document text
    • https://s3.amazonaws.com/kijelopazekune/arduino_starter_kit_manual_password.pdfIn PDF document text
    • https://s3.amazonaws.com/rubidokezive/2011_bmw_s1000rr_performance_specs.pdfIn PDF document text
    • https://s3.amazonaws.com/bidurudilidujug/counterexample_geometry_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/kisagoz/9940075279.pdfIn PDF document text
    • https://s3.amazonaws.com/kovozenamofox/asm_specialty_handbook_aluminum_and_aluminum_alloys_free_download.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fcd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCD5 5096 bytes
SHA-256: b2e422ccbe3ccd4cd528dee28c7a6d65d115834b3499a0f5c7d4187eddca10d3
font_01_sfnt_off00010e47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E47 10564 bytes
SHA-256: 423f0139081485680a7ef23a4371707e08e22bc20da4c45522113e7f6a17b380