Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bea9a280d65fdef…

MALICIOUS

PDF

39.3 KB Authoring application: OpenOffice Draw
MD5: 87611040c69950546c8032b622e0187d SHA-1: fc65bbab40900e2bd63f7062809c40fa15565e13 SHA-256: 9bea9a280d65fdef5b0d31c922b4698e2e7e5f76c1b41a5eb4e686ed0edbdfbf
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection of 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a malicious intent, likely related to phishing or traffic redirection. The document body, though partially corrupted, contains text related to learning Spanish and includes several of the extracted URLs, suggesting a lure to engage the user. The primary attack pattern involves directing users to a network of external PDF documents hosted on various domains.

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.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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://gadazeju.debretagnevirtu.com/uploads/2020/01/28/5892370.pdf
    • http://jixeru.panda-opt.ru/uploads/2020/01/28/75e1352140d.pdf
    • http://steercrazyquarterhorses.com/uploads/1/3/0/4/130435622/kubevu.pdf
    • http://jumexo.flowers38.ru/uploads/2020/01/28/1374212.pdf
    • http://raj.asolar.shop/uploads/2020/01/27/jelelani.pdf
    • http://staywiththeproblems.com/uploads/1/3/0/6/130620390/6713989.pdf
    • http://mepo.promyvkapto.ru/uploads/2020/01/27/mireferubunur-lewejoleranu-vinezalibemuza-regibe.pdf
    • http://datuvi.rangoro.pro/uploads/2020/01/28/1174731.pdf
    • http://menosuxesi.russtin.com/uploads/2020/01/28/3cb0f4.pdf
    • http://annotalegal.com/uploads/1/3/0/4/130489253/130489253.html#book+for+learning+spanish

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001218.bin
5668a4a30459d91626e7a4ff801e155e5328180eb42ae3dda2d8dcede5ae5de5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1218 8796 bytes

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