Malicious PDF — malware analysis report

Static analysis result for SHA-256 97ce80dd77018119…

MALICIOUS

PDF

78.4 KB Created: 2021-03-14 02:13:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 27188075bc9943ad181e9f04740da760 SHA-1: 332e42bd84020b277efe8420c6853db43eac617b SHA-256: 97ce80dd770181195b54b3e7e8ca749331908433d9c1bc879c03cf14b8c42c53
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with a primary URL suggesting a lure for PDF editing services. Heuristics indicate a link farm and ClamAV detection as Pdf.Phishing.Trojan, strongly suggesting a phishing or malware distribution attempt. While no scripts were explicitly extracted, the PDF structure and external links are indicative of malicious intent, likely involving a drive-by download or redirection to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://maypoin.ru/award?keyword=edit+pdf+erase+text+online
    • https://cdn-cms.f-static.net/uploads/4485576/normal_60430e143d26c.pdf
    • https://xurexesezegurez.weebly.com/uploads/1/3/4/0/134096141/d8290b925c0a1.pdf
    • https://dusukipujadun.weebly.com/uploads/1/3/1/4/131437174/xekaso-naguruxumotenos-kapuganolo-dadufakeje.pdf
    • https://rusaxexuratibu.weebly.com/uploads/1/3/2/6/132680860/5441274.pdf
    • https://wakaxizuso.weebly.com/uploads/1/3/5/3/135322555/2206245.pdf
    • https://cdn-cms.f-static.net/uploads/4366040/normal_601bb06f040ab.pdf
    • https://cdn-cms.f-static.net/uploads/4488133/normal_60316410d1d3e.pdf
    • https://biluvumilu.weebly.com/uploads/1/3/1/8/131860938/6420051.pdf
    • http://fiteduwad.22web.org/research_paper_on_employee_absenteeism.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://bikinegisuzuse.rf.gd/98980821046.pdf
    • https://0b609444-e5a2-4a7e-9779-a3c6bae51a53.filesusr.com/ugd/529dbf_f5b2f02ce18d42a1b15fbf53fc1118d3.pdf?index=true
    • https://af1bea64-f5cd-41c2-a7c1-97f21c1aa057.filesusr.com/ugd/592671_195b56b9d93f4829a44e110a2f8d9f09.pdf?index=true
    • https://123949be-7110-4ba3-a240-a7df06fb38ce.filesusr.com/ugd/80fd5d_42512f5f2b3b41a1a00873d1ac0d79a2.pdf?index=true
    • https://6b238923-235f-4dbf-89f5-802ba9b9402e.filesusr.com/ugd/b914b5_38d39003d3c644d689473904be897db3.pdf?index=true
    • https://8767aa75-4bd5-48c0-94ca-24e983238001.filesusr.com/ugd/debdc1_6171b88761084146a7dd630c36f181ef.pdf?index=true
    • https://3633ae4e-9acc-45df-885e-1bfa1481cb44.filesusr.com/ugd/e73054_188885fcd9e24cd29d3f1ddc55141f1d.pdf?index=true
    • https://4454cc88-256b-48ad-9013-c0414c72072d.filesusr.com/ugd/67e251_20d81d12a81f483b81652adf36dd6c6f.pdf?index=true
    • 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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f6d4.bin
ab9a0c68bd7db4adf0a70446fe56aa372dd9ab3f02851222f436d5279bd9afae		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF6D4 5060 bytes
font_01_sfnt_off0001081e.bin
d0035e5dfc35b804538638f87a21b52a86c9c52a8343442b5dd92811442b2d94		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1081E 10648 bytes

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