Malicious PDF — malware analysis report

Static analysis result for SHA-256 8333037764cde213…

MALICIOUS

PDF

79.8 KB Created: 2021-05-07 18:06:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: a8b55d15e3ee9998dfa3cf77e7d2f237 SHA-1: 9588036d62a61ab542a6d28e2d9271826bf91237 SHA-256: 8333037764cde2130833c1b1312b1d4a25c408e1b4adb1efa90a1cca0f8c0af1
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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 embeds external URLs that direct users to attacker-controlled resources. 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-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/strik?utm_term=how+to+install+an+insinkerator+badger+5 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4466135/normal_5fe21c0bf3131.pdfIn PDF document text
    • https://cdn.sqhk.co/todusukiraxi/Xid59ja/ant_farm_characters_names.pdfIn PDF document text
    • http://nowofuguvinidaw.iblogger.org/dslr_camera_blur_effects_premium_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475217/normal_5fe6c94248f24.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403127/normal_601a67d4c9dba.pdfIn PDF document text
    • https://cdn.sqhk.co/vadetegubufo/boggij7/deep_house_music_internet_radio.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387586/normal_604b1e95ad92a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453528/normal_5fc64a1c68db8.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/mukutud/tifokawo.pdfIn PDF document text
    • http://jatujij.rf.gd/23708756724.pdfIn PDF document text
    • https://s3.amazonaws.com/mijumomub/xotomafiwebukiwu.pdfIn PDF document text
    • https://s3.amazonaws.com/debiwelof/25671560114.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7639b382-486d-4e77-997f-4f1f19a1f873/budararafabav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f38c5c2-5389-41b3-a404-f59e7f20f1eb/cybex_arc_trainer_630a_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/fadupazageraf/zibez.pdfIn PDF document text
    • https://s3.amazonaws.com/sazariwapa/20709618333.pdfIn PDF document text
    • https://s3.amazonaws.com/gorajikunobixi/hoover_steamvac_deluxe_cleaning_solution.pdfIn PDF document text
    • https://s3.amazonaws.com/buwosevax/206351967.pdfIn PDF document text
    • https://s3.amazonaws.com/rezugekolaba/80960809356.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f8ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8FF 5376 bytes
SHA-256: a9990be6f8c6467ad0f780f23fb7aca47480d6b229494ae05d7cecbedf87fb50
font_01_sfnt_off00010b67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B67 11264 bytes
SHA-256: 758b30d7180ca0426cb38097af0ec39b5b24a1a5c8379907d2baea2af72292f0

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