Malicious PDF — malware analysis report

Static analysis result for SHA-256 d23fca0fb385afeb…

MALICIOUS

PDF

33.9 KB Created: 2020-06-03 14:46:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4010c20f6ac44834849bedeefc4a3dc5 SHA-1: faff271e86e6aaf5c083d968996292df3446b64f SHA-256: d23fca0fb385afeb92d78215565e497572604fbcdddad0ec3d81a970a4091566
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Phishing:Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of external links, as indicated by the PDF_SEO_LINK_FARM heuristic. The document body, though partially corrupted, contains text related to educational worksheets and references the wkhtmltopdf application, suggesting a deceptive lure. The primary intent appears to be directing users to a network of linked PDF files hosted across multiple domains, likely for SEO spam or to distribute further malicious payloads.

Heuristics 3

  • 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
  • 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 http://lebanonlandscaping.net/uploads/1/3/0/6/130639530/130639530.html#fraction+and+decimal+worksheets+grad
    • http://activeshootersurvival.com/uploads/1/3/0/6/130603728/regaxulud.pdf
    • http://hiddenhorseartist.com/uploads/1/3/1/4/131483245/9794393.pdf
    • http://cofimscellier.com/uploads/1/3/0/3/130379407/77216dded3.pdf
    • http://lightrailtimes.com/uploads/1/3/0/6/130639634/8800155.pdf
    • http://lebanonlandscaping.net/uploads/1/3/0/6/130639530/terms.html
    • http://lebanonlandscaping.net/uploads/1/3/0/6/130639530/dmca.html
    • http://lebanonlandscaping.net/uploads/1/3/0/6/130639530/policy.html
    • https://lotosam.files.wordpress.com/2020/06/jiwat.pdf
    • https://kiwekesumi.files.wordpress.com/2020/05/80296056672.pdf
    • https://misabuvewag.files.wordpress.com/2020/05/bomerufaxojademesevuzolel.pdf
    • https://wiwoxul.files.wordpress.com/2020/05/49217689205.pdf
    • https://fatevib.files.wordpress.com/2020/06/69964214543.pdf
    • https://vanavipunu.files.wordpress.com/2020/06/kixufegadiverebegopav.pdf
    • https://vopirerep.files.wordpress.com/2020/06/kojumotijupike.pdf
    • https://kabisabu.files.wordpress.com/2020/06/95798969166.pdf
    • https://rebaxoduzun.files.wordpress.com/2020/06/gebemokenimitavopesutezep.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/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000058fa.bin
34692ea22d774c4334f84136e1b944985e9066f0c6f2581e6f2fe2115fe32f7b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58FA 10288 bytes

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