Malicious PDF — malware analysis report

Static analysis result for SHA-256 004f078b2abd333f…

MALICIOUS

PDF

77.0 KB Created: 2020-11-22 11:41:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7b16298b391c8000277d8b13c91ad316 SHA-1: 16ee5e4bab4353e6427a95ed747df66863f72e97 SHA-256: 004f078b2abd333f111e4cf02524ddeb2003e8cc356592e09ae852c9c66916c1
156 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, with a critical heuristic identifying it as a PDF SEO link farm. One of the primary external links, 'https://trafficel.ru/123?utm_term=www+seniat+gob+ve+sistema+en+linea+renovacion', is flagged as suspicious. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • 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.
  • 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://trafficel.ru/123?utm_term=www+seniat+gob+ve+sistema+en+linea+renovacion
    • https://cdn-cms.f-static.net/uploads/4369786/normal_5f9cdf923571b.pdf
    • https://cdn-cms.f-static.net/uploads/4420449/normal_5fa5b34f67cfb.pdf
    • https://cdn-cms.f-static.net/uploads/4488809/normal_5faa4dc4c4103.pdf
    • https://cdn-cms.f-static.net/uploads/4501495/normal_5fb2e5e795f1d.pdf
    • https://cdn-cms.f-static.net/uploads/4389604/normal_5f926fb73ae48.pdf
    • https://kofusozefo.weebly.com/uploads/1/3/4/5/134515267/nimejagoreges_lizisaxizosafud_lularimi_nivobukari.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/8dbca195-5421-48d8-b071-3708794699bc/30513348394.pdf
    • https://s3.amazonaws.com/purawuma/45527218275.pdf
    • https://uploads.strikinglycdn.com/files/23358741-bb02-47c5-b68e-1dc3b93dc4a9/what_were_orphanages_like_in_the_victorian_era.pdf
    • https://uploads.strikinglycdn.com/files/fa6e76e2-64f3-409d-8ef4-12d7d2cb2544/bootcamp_support_manual_download.pdf
    • https://uploads.strikinglycdn.com/files/ee239f92-375f-448b-b39a-d1d0e5411b64/lego_bionicle_mask_of_ultimate_power.pdf
    • https://uploads.strikinglycdn.com/files/3d0399aa-5de8-411f-94c2-c0a91d7ae83f/download_wifi_password_hacker_v5.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cde7.bin
6a7390c9e634f7f167841a75ffa617ce3f7010ba402b4c06ad0a47e5500b6a59		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCDE7 2856 bytes
font_01_sfnt_off0000d811.bin
51f34cd69ac3fed792457323a49fa4a8c767966c6360d472d3e1e77b7a373bc8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD811 5424 bytes
font_02_sfnt_off0000ea92.bin
b9db46664ede6d50122aa212b5ffefe89f8c518e33c2ee093517f94020ed5df1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEA92 11056 bytes
font_03_sfnt_off00010ff7.bin
40bbf222f0a7f038c1033ba4c9f519e2eaa991b95910bfff7f3ce3cd24708d84		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10FF7 16116 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.