Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a0ba0527881982b…

MALICIOUS

PDF

82.2 KB Created: 2021-03-05 11:05:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 4204316e236d83cd9dce69b128a933c3 SHA-1: a7c1870bec063bb0dc6216d84afbd5c0aaf74fa1 SHA-256: 0a0ba0527881982bfb13dbda761286a6f87d0156f7e85e58e897a05647ae5a20
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URI pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged this PDF as malicious. The document body, though heavily obfuscated, appears to be related to search results for song lyrics, suggesting a phishing or social engineering lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://pelibifir.ru/award?keyword=ed+sheeran+love+yourself+lyrics+deutsch PDF link annotation
    • http://nnorm-id.com/xutuminopikulujijolorr4kh.pdfIn PDF document text
    • https://cdn.sqhk.co/zivudasexoni/vhfiiVO/zambian_politics_news_now.pdfIn PDF document text
    • http://tigatixe.iblogger.org/jepivibuzikobi.pdfIn PDF document text
    • http://freds.space/vomidewizunea07tm.pdfIn PDF document text
    • https://cdn.sqhk.co/jubawiwa/gnQdUgj/social_media_marketing_agency_course_free.pdfIn PDF document text
    • http://giocodigital.space/canederli_vegetariani_formaggiov4y16.pdfIn PDF document text
    • http://ihsteam.ru/allen_ginsberg_reads_howl_and_other_poemsngm6q.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426262/normal_5fc7cfb22679b.pdfIn PDF document text
    • https://cdn.sqhk.co/numavagoko/Zkfthiv/vurakofufolasegomoziw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417024/normal_603353c3c5ced.pdfIn PDF document text
    • https://cdn.sqhk.co/bepeguvovori/FVejaJ7/super_mario_world_nintendo_switch_gameplay.pdfIn PDF document text
    • http://sethel.xyz/how_to_weld_with_lincoln_18063n34.pdfIn PDF document text
    • https://cdn.sqhk.co/sologavabo/GM4ggid/nafuredemigukam.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/rumezo/99363643091.pdfIn PDF document text
    • http://bedekopezedegej.rf.gd/editable_templates_for_baby_shower_invitations.pdfIn PDF document text
    • https://s3.amazonaws.com/juzowilipi/85915578302.pdfIn PDF document text
    • https://s3.amazonaws.com/kotidox/vujejafimul.pdfIn PDF document text
    • http://tojitobesa.epizy.com/nawijuwibefozof.pdfIn PDF document text
    • https://s3.amazonaws.com/ziwuvijevo/39403557712.pdfIn PDF document text
    • https://s3.amazonaws.com/mibiwivanetuj/android_linux_apkpure.pdfIn PDF document text
    • https://s3.amazonaws.com/taturi/catheter_associated_urinary_tract_infection_treatment_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/kotodur/99564596446.pdfIn PDF document text
    • https://s3.amazonaws.com/vetamedisoz/castrol_edge_extended_performance_vs_mobil_1.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_off000103ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103AB 5228 bytes
SHA-256: 7e0a38b1ac5a3f88478ae35f3be58789dbee63d3d3c79d77513fee40955f29f9
font_01_sfnt_off00011581.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11581 10816 bytes
SHA-256: 47df3954622636ca3f388cf709e411862c26a4f20cd38e9f873eb1fdc73220b4

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