Malicious PDF — malware analysis report

Static analysis result for SHA-256 deacb2dee8482243…

MALICIOUS

PDF

43.4 KB Created: 2020-06-21 12:51:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 46b0983d1b20540835c3c9099eded715 SHA-1: 4fd5f4305aa81bc95e0132a3c096614e6b452b40 SHA-256: deacb2dee8482243d2d553770d04351bc83bc076807d394c246e4f7553476215
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF file contains a significant number of external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a link farm or SEO manipulation tactic. The document body, though containing seemingly innocuous text about 'verbals gerund phrases answers', also embeds these URLs. No scripts were extracted from this sample. The primary attack pattern appears to be directing users to a large number of external websites.

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://seattlechristmaslights.org/uploads/1/3/0/5/130539935/130539935.html#lesson+4+verbals+gerund+phrases+answers
    • http://ahappyfitlife.com/uploads/1/3/0/2/130271111/5544877.pdf
    • http://levensondesign.com/uploads/1/3/1/4/131410597/bbfaeeed080ec9.pdf
    • http://heavenlywedding.fr/uploads/1/3/1/3/131398285/6719620.pdf
    • http://magickalelements.com/uploads/1/3/0/6/130620684/3362960.pdf
    • http://kukrecruiting.com/uploads/1/3/0/5/130547771/0d409532ee.pdf
    • http://thamestherapies.com/uploads/1/3/1/4/131483197/lelijo-pezij.pdf
    • http://asfgtutoring.com/uploads/1/3/1/4/131408168/bafuxopivur-tazomugekub-mokife-viworizuvidogo.pdf
    • http://cardia.org.uk/uploads/1/3/0/2/130272932/6405976.pdf
    • http://learnhowwerelate.com/uploads/1/3/1/4/131407278/vofugulalore.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b5b.bin
8a43eebc56f77caba59ddf9e97aab4a3358ff1a22ade4d432ede89f47fa3bf1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B5B 5296 bytes
font_01_sfnt_off00007d5f.bin
2d0c1d99c3f4be1580b421ec76ab882db6fac9dee745e90376234a66b2a125bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D5F 10640 bytes

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