Malicious PDF — malware analysis report

Static analysis result for SHA-256 418b36951991fd3c…

MALICIOUS

PDF

80.2 KB Created: 2021-03-17 03:52:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 12a67222b46afccf1f5a461dab56aab3 SHA-1: cadbb8fb3900938de70c9629f7373c8f351d7040 SHA-256: 418b36951991fd3c5675cca3faf322afe5c9a7414b1556aca536cf19652617aa
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified by heuristics as a potential phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it is designed to redirect users to malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://resalured.ru/award?keyword=acetabulum+anatomy+pdf
    • https://cdn.sqhk.co/rabataxuvax/fghiehb/knight_rider_2008_car.pdf
    • http://fitit.space/gtest_user_guidewdxz4.pdf
    • http://zurujavurobe.scienceontheweb.net/career_assessment_aptitude_test.pdf
    • http://wordsideget.top/fubiwaminatakofirluqtj.pdf
    • http://rowowevu.mypressonline.com/wugugukosujakekojupitije.pdf
    • http://devubowoku.mypressonline.com/samsung_un32j4000af_stand.pdf
    • https://cdn.sqhk.co/mekizojo/jq0heZg/16776431519.pdf
    • http://yeswins.space/vogenu1m78t.pdf
    • http://sepozimog.scienceontheweb.net/54631933875.pdf
    • http://gayerkan.com/area_of_cylinder_formula6h25h.pdf
    • https://cdn.sqhk.co/zevukodixu/jfTXQni/melaxafud.pdf
    • http://zatutajijiti.getenjoyment.net/agroforestry_trees.pdf
    • http://runojiwum.getenjoyment.net/metabolic_syndrome_risk_factors.pdf
    • https://cdn.sqhk.co/telazaje/ge7jf68/31963354027.pdf
    • http://fipagolanikobax.mygamesonline.org/vitamin_b12_foods_for_vegetarians.pdf
    • http://ziwewixowele.sportsontheweb.net/old_navy_customer_service_telephone.pdf
    • https://cdn.sqhk.co/vesagivara/rgdNib8/nidipijo.pdf
    • http://zugobopepoj.sportsontheweb.net/espirometria_valores_normales.pdf
    • http://ideaita.fun/764389512728uek6.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://sajulugebimisu.myartsonline.com/is_physics_class_12_hard.pdf
    • http://medexode.atwebpages.com/kuzasizewonuxumopev.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://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fe4b.bin
dfe4f98bb9da0e6cff2b3c73fbf421b0f59c4e19a53687d00e85c228c7ef6ecf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE4B 5256 bytes
font_01_sfnt_off00011029.bin
d4e8d0c152516610bbb1351ba38560b6fde7cb161d643c907fcee78fd20dac9f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11029 11368 bytes

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