Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d2c5c14a17eba0c…

MALICIOUS

PDF

62.9 KB Created: 2021-02-22 10:45:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: b4c5d138544843da2ced4eef8cb6c2c9 SHA-1: fcd534c63ae31cc4dc4f79c901a50fac880fa949 SHA-256: 0d2c5c14a17eba0c70ebebb22f9f5e1d183af39b66a8d3e6703853137056c83b
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, specifically as a phishing or trojan. It contains a large number of external links, indicating a link farm or a phishing attempt to direct users to malicious sites. The ClamAV detection 'Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0' further supports this assessment. No scripts were extracted, but the presence of numerous external URLs suggests a malicious intent to redirect users.

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 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.
  • 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://jacksth.ru/strik?utm_term=craftsman+315+garage+door+opener+program PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4482415/normal_5feee22a1d113.pdfIn PDF document text
    • https://cdn.sqhk.co/jevipugirofi/TqtYkig/83876721266.pdfIn PDF document text
    • https://fuzimisadu.weebly.com/uploads/1/3/5/3/135319831/241505.pdfIn PDF document text
    • https://cdn.sqhk.co/dufolatik/bnM6Lid/beratakudomiw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463803/normal_5fdcdc6b45c6b.pdfIn PDF document text
    • https://rutarutan.weebly.com/uploads/1/3/5/2/135294158/kiboxe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426677/normal_60040740c53e0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419410/normal_5fc74ade605c9.pdfIn PDF document text
    • http://reduslimer.website/34741300315rg6in.pdfIn PDF document text
    • http://italy50wow.pro/xesoruxorowowatidg2im.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423750/normal_60199a57585c0.pdfIn PDF document text
    • https://zowololo.weebly.com/uploads/1/3/5/2/135294949/gexevumakefejo-doteruju-wupujabe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484994/normal_5fcbd483724cd.pdfIn PDF document text
    • http://6gusevshop.website/xedovekw4s8p.pdfIn PDF document text
    • https://nenovalo.weebly.com/uploads/1/3/2/7/132712003/lanoro.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000ba35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA35 5576 bytes
SHA-256: 3c10f46d76299b9f04b819cb57334b4782362aa8ed12e32a903efa661dbd01b3
font_01_sfnt_off0000cd1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD1A 9808 bytes
SHA-256: 74fe6b8f45c93f78af1130b052dacd94f7b262ee01e114dc22c0e35d8a9ca636

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