Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6959daa6a9b44f8…

MALICIOUS

PDF

74.7 KB Created: 2021-04-06 04:04:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cffe5ea62b9e2633f5b5ba555887307c SHA-1: aae0488dc1630aae32f7d7f3028fed4abab30059 SHA-256: a6959daa6a9b44f8fbb4d5218e5c9581e3163c8e17649a8d51e5d782a26cde67
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is likely a phishing lure for a ringtone. ClamAV and ML classifiers also flagged this PDF as malicious. The presence of embedded URLs and the overall structure suggest a phishing attempt, likely delivered as a spearphishing attachment.

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://jumiwimov.ru/wix?keyword=turkey+gobble+shotgun+ringtone
    • http://mumopajikex.mygamesonline.org/livro_after_5_minhateca.pdf
    • https://cdn-cms.f-static.net/uploads/4459624/normal_6024973cbe970.pdf
    • https://static.s123-cdn-static.com/uploads/4425726/normal_5ff1df1939694.pdf
    • https://cdn-cms.f-static.net/uploads/4422620/normal_5fd132b3d4ad1.pdf
    • http://wizapivizesib.mygamesonline.org/96536810743.pdf
    • http://help-violation.com/68132541127xvg7p.pdf
    • http://poxumanavofeboz.scienceontheweb.net/what_are_the_hero_ranks_in_one_punch_man.pdf
    • http://cardioactiveufficiale.site/honda_generators_for_sale_in_maine340w9.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/mefadedosuw/bbm_full_form_of_school.pdf
    • https://s3.amazonaws.com/vukumesoj/21916369726.pdf
    • https://s3.amazonaws.com/wikurixobelu/xidirekakap.pdf
    • https://s3.amazonaws.com/gizonukorad/in_the_woods_tana_french_wiki.pdf
    • http://gixiluvigatekij.atwebpages.com/interview_schedule_definition.pdf
    • http://buzumigasox.myartsonline.com/suwoluxugikumezewurab.pdf
    • https://uploads.strikinglycdn.com/files/8286fd61-771d-4ed5-bb11-c6c5040225a7/el_toque_de_bandera_de_mexico_con_letra.pdf
    • http://gogujigasad.onlinewebshop.net/36935694980.pdf
    • https://uploads.strikinglycdn.com/files/a5ea7fc6-0782-4078-a420-a7f8df041463/99331554405.pdf
    • http://vawirir.atwebpages.com/fulavelugezasugiguf.pdf
    • http://jelomasulavi.atwebpages.com/fatosuxo.pdf
    • https://s3.amazonaws.com/jajuzasalikirut/arizona_sunshine_psvr_cross_platform.pdf
    • http://dexadusoxeb.atwebpages.com/zunivixufitonenifoganamop.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e6c6.bin
fa01f9482a25ee4b5a0bdb5d5349f142881f2623bf2fa348ce4c38f247331adb
pdf-font-stream PDF embedded font (sfnt) at offset 0xE6C6 4992 bytes
font_01_sfnt_off0000f7ce.bin
6512cf3b23a2de9dabe8cb20e47188fb65b55fe90affa6b419d58fc4df7284a5
pdf-font-stream PDF embedded font (sfnt) at offset 0xF7CE 11048 bytes