Malicious PDF — malware analysis report

Static analysis result for SHA-256 193e69ef22eec424…

MALICIOUS

PDF

75.0 KB Created: 2021-04-05 19:14:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: f2258e3963040847e4501d8ffcdbffc5 SHA-1: 72a838ab2e5f4eb33b5e94c6c0bd093354f7da45 SHA-256: 193e69ef22eec4246207d9be19b2022243699f1e78fde42b4177f79418c37963
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, and contains an external URI pointing to a suspicious domain. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates the PDF is part of a link farm on disposable hosting, suggesting a phishing or malware distribution attempt. The presence of embedded URLs and the overall structure point towards a phishing or credential harvesting attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://mezovuduw.ru/strik?utm_term=wolves+of+the+calla PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4390680/normal_6002ae9115ef5.pdfIn PDF document text
    • https://manabuvajej.weebly.com/uploads/1/3/4/8/134847277/fab83b9f63b0a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451350/normal_5fe2c054a9a0e.pdfIn PDF document text
    • http://6gusevshop.website/restoration_hardware_bellina_crib_instructionshgkcf.pdfIn PDF document text
    • http://genusadnlo.space/42648180490zdz53.pdfIn PDF document text
    • http://bluebadge-support.com/36101641954z2ids.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446165/normal_604ad8462079c.pdfIn PDF document text
    • https://tofavasexivefet.weebly.com/uploads/1/3/4/5/134578877/62c9cbffe4608e.pdfIn PDF document text
    • http://amandeepsadyora.com/jawbone_mini_jambox_power_cordemnl9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://62bfe9e3-d01a-456c-9d14-3ac71290fd99.filesusr.com/ugd/cfe640_1385ec43c0834d7383bf39eea2cb2fdd.pdf?index=trueIn PDF document text
    • https://aa514bbb-a96e-4bc9-8ff3-0ca2edd1104f.filesusr.com/ugd/3fc21f_c8957b2e70014e2dbd75c3bad1d95a9a.pdf?index=trueIn PDF document text
    • https://ab60d57a-1f92-408f-9079-0b325776b613.filesusr.com/ugd/724fb5_6f822a6f2c594f169424c1808b84f1b6.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/552fcb61-3dc4-4529-8ac8-cdca1e496949/lowrance_elite_5x_svensk_manual.pdfIn PDF document text
    • https://0ca3454e-05ac-49fc-8d00-644b1af7be3c.filesusr.com/ugd/8bf3fc_746f94aae01649a8a0f9265bf13ca3d8.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/87c9ffdd-6c5c-4b1b-ab7b-1497eb062db3/90412701417.pdfIn PDF document text
    • https://911f1565-2faa-4874-b261-330d521e7362.filesusr.com/ugd/f46427_74dc8b0a75b5412aad0c2a28ca72ed31.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/67f55bb6-e9f2-4580-9c1a-d9bcdf7c0fdb/84562377793.pdfIn PDF document text
    • https://45ed8376-e832-497f-ab20-0a31924dc5db.filesusr.com/ugd/4b7290_892aa0d31415487d89e9e2d43eb741a9.pdf?index=trueIn PDF document text
    • https://7e70056c-c2aa-4e53-98c5-50750123c107.filesusr.com/ugd/f8ae5d_36b50453feb544abbc86f9849c7e26c7.pdf?index=trueIn 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_off0000e837.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE837 4944 bytes
SHA-256: cc01f2c94cb8dbf61ae3c4b28beeda772dc5ad19431096aae64f0d4c3c407d18
font_01_sfnt_off0000f91f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF91F 10652 bytes
SHA-256: e267f5f859a337ad20627489391d5b45aebbc1f71913f3dae92a1dac97aaef05

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