Malicious PDF — malware analysis report

Static analysis result for SHA-256 b03dc51e32958ac5…

MALICIOUS

PDF

74.6 KB Created: 2021-02-23 00:02:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 884607414c520c6b529b2303b7c9e442 SHA-1: 0ddd47edbc541279b8276af2a6235d1e45bb5df7 SHA-256: b03dc51e32958ac53b4981779babc4dca832ca3d85da7cf3c8e6488f2a38a0bb
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://crophysi.ru/strik?utm_term=vray+for+sketchup+2020+system+requirements PDF link annotation
    • http://prizinsta.info/setaduvarijovumejituvix69nm5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466391/normal_600575f0c9adf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409122/normal_600d5ee46ceca.pdfIn PDF document text
    • http://bnatural.space/warhammer_40k_codex_freew9b0w.pdfIn PDF document text
    • http://save50.pro/22459629410iw6o6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419827/normal_5feb77dd7966d.pdfIn PDF document text
    • http://buyfastedcircle.xyz/convertidor_de_gramos_a_litrosan6yo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414358/normal_5fc6d6793d87b.pdfIn PDF document text
    • http://de-bewertung-889562.icu/horizon_credit_union_membershipso3kq.pdfIn PDF document text
    • http://ecoservice-vlad.ru/28120916231sbhk7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461763/normal_6008ff9d21ccc.pdfIn PDF document text
    • http://excellent-spb.ru/21696675024d6psq.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/xiwevitox/87303916295.pdfIn PDF document text
    • https://s3.amazonaws.com/lanaladu/reeds_naval_architecture.pdfIn PDF document text
    • https://s3.amazonaws.com/gupawupigawono/61183976019.pdfIn PDF document text
    • https://s3.amazonaws.com/zevutebulaworel/arbitrary_waveform_generator_ppt.pdfIn PDF document text
    • https://s3.amazonaws.com/fejififimaketo/battle_chess_3d_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wifiduxezo/21795253786.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_off0000e530.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE530 5752 bytes
SHA-256: 511302a6dcedf3576e660f0bd32a352ff0f9f1fb2a064f7838bda08b5c755d79
font_01_sfnt_off0000f8b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8B1 10584 bytes
SHA-256: ad0761e2e6e04777a3189df64daa2602f01883706c386788504e6ffe4c91e4a3

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