Malicious PDF — malware analysis report

Static analysis result for SHA-256 07bb2dd1cab49bf7…

MALICIOUS

PDF

86.1 KB Created: 2021-04-01 18:13:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: dcb664eabdf78406dfd5a8d6046586a8 SHA-1: db24450892503a2901198bb4722a8c9bd86819af SHA-256: 07bb2dd1cab49bf744bef3941832b648b259b20ce69e1b09f4771edaf47aa78f
186 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many pointing to disposable hosting, suggesting a link farm or SEO spam campaign. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. The embedded URLs and the document body's reference to 'niv bible pdf free download' indicate a lure to drive traffic to potentially malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://soxebez.ru/award?keyword=niv+bible+pdf+free+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4402252/normal_602f5136137f1.pdfIn PDF document text
    • http://gupirigugorixuf.sportsontheweb.net/63631340362.pdfIn PDF document text
    • https://xapenivivafozeb.weebly.com/uploads/1/3/1/3/131379266/4c6a52c.pdfIn PDF document text
    • https://tiketutowiko.weebly.com/uploads/1/3/5/3/135345961/9349856.pdfIn PDF document text
    • http://leririv.sportsontheweb.net/konariluguliledopok.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463808/normal_5fcf50d168118.pdfIn PDF document text
    • https://siresikewutawin.weebly.com/uploads/1/3/0/7/130739490/kuson.pdfIn PDF document text
    • https://badosesidexezub.weebly.com/uploads/1/3/0/8/130874160/f0c8810baf3.pdfIn PDF document text
    • https://voloxamofe.weebly.com/uploads/1/3/0/8/130874475/kedaroxoziril_kuwida_tavepupinujeg.pdfIn PDF document text
    • https://sixokibikije.weebly.com/uploads/1/3/1/4/131437702/pudidujefeza-rowoji-numefuwelu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381528/normal_60172c3f2b19f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385612/normal_6046e5fa82163.pdfIn PDF document text
    • https://demepitogiwod.weebly.com/uploads/1/3/4/0/134097880/nomeriwet.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9e9160e-52bf-4c9f-9948-06ca0e57e86a/stihl_ms250_parts_catalog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/387c0d1d-95ce-4e8d-ba41-a21da35b5474/nunadozexej.pdfIn PDF document text
    • https://6363ce23-9394-4102-a476-7be320345719.filesusr.com/ugd/7c41c1_8f2405a937e645a59ce481473fa2bec5.pdf?index=trueIn PDF document text
    • https://a8fdb364-3865-4521-a36b-e12f4de7752f.filesusr.com/ugd/e20637_45d9727a8fdc4e0d8860ddffaa7b380d.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d10cb90-163e-48c7-bed9-2fc58952079d/sistema_endocrino_concepto_y_funcion.pdfIn PDF document text
    • https://167c8e7b-8160-49a2-a88e-f26749d647c8.filesusr.com/ugd/1ad47d_a93ce368f50a4f85989cad135734f366.pdf?index=trueIn PDF document text
    • https://61df3396-90b5-4b69-a3ae-475c9da6ebc5.filesusr.com/ugd/516574_2c291ba36d6c4e9497777b73728fa32b.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fd44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD44 5116 bytes
SHA-256: 0f2e5aef7302218b368c0a5aedcc6f5cb22ff9b26260c7b0de4a36014137553c
font_01_sfnt_off00010ed0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10ED0 11060 bytes
SHA-256: 49a3007270c04766c13f631a46750705839feb52fbb5aa9c4424f96a41fb239b
font_02_sfnt_off000134b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x134B5 16392 bytes
SHA-256: c9b9d40238817e9fd1c0b290bb100284b8f2d9dcc1188338581b9d27efa8fa30