Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bf122135c5eb8b1…

MALICIOUS

PDF

66.9 KB Created: 2020-12-20 20:54:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: bcf3e8478b7c9c3422560a4b94e6a324 SHA-1: bcec994a5be2d8c08c2bbc5d9df2670a5fa6672e SHA-256: 1bf122135c5eb8b17f3c6420e2952a0f26258c2e217fe8af6e3aab562d5f6826
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier. It contains an embedded URL pointing to a suspicious domain, which is likely part of a phishing or scam campaign. The document body, though heavily obfuscated, contains text related to 'Phantom of the opera stage costumes', suggesting a lure to entice users to click the malicious link.

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://trafffi.ru/strik?utm_term=phantom+of+the+opera+stage+costumes+for+sale PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4413848/normal_5fcea981e89fc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499656/normal_5fd090ea273b1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421464/normal_5fdf396a81596.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417648/normal_5fd1b716c1fb6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411229/normal_5fdf1361769e3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451941/normal_5fa028b402aa6.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/bejexe/brookland_cayce_high_school_report_card.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91c8a42b-81eb-4d4e-87a6-40d1eaa3a51c/michael_crichton_westworld.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7c83cf6-9bc9-4e13-965a-7cd16fc5ada2/gacha_life_outfits_for_boys.pdfIn PDF document text
    • https://s3.amazonaws.com/sitok/50322106614.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83befb9d-62a1-4c5d-85fd-b702c28733ee/vavigiwezagepa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c0800a9-ebea-4ada-8001-ebcb874dcc72/6237383361.pdfIn PDF document text
    • https://s3.amazonaws.com/gadumagabusodel/cyberpunk_red_free.pdfIn PDF document text
    • https://s3.amazonaws.com/lanaladu/wowobolunebamarowusa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4e00c94-6a81-4021-9a30-02b11c73c205/95891261490.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 3

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_off0000c82c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC82C 5432 bytes
SHA-256: 561c969c06e502ecec1e118abf03728225f0cb8299802b19de3e7788ff023a32
font_01_sfnt_off0000da80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA80 10740 bytes
SHA-256: 1c9b1d80e6876d2d426a76e4552c99c9838b8aea58dbcd24a240e27236be927a

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