Malicious PDF — malware analysis report

Static analysis result for SHA-256 76444d8e243ce5ed…

MALICIOUS

PDF

40.8 KB Authoring application: LibreOffice
MD5: 6f8c6f02d0bd7f3a4ca57cba7ad205f0 SHA-1: e3f23e9bdfa0108115472dc22a07bf9e802dc10e SHA-256: 76444d8e243ce5ed597deab56a2eec2640953cb4508e81c3421dc261fd648984
192 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to other PDF files, indicating a link farm likely used for SEO manipulation or to distribute malicious content. The 'SE_CLICKFIX' heuristic suggests the document may also attempt to trick users into executing commands. While no scripts were explicitly extracted, the presence of embedded URLs and the 'PDF_SEO_LINK_FARM' heuristic strongly suggest a phishing or content distribution attack.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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://daturafashion.com/uploads/1/3/0/5/130589287/9358858.pdf
    • http://beatafurstenberg.com/uploads/1/3/0/6/130605016/loduxaxanofe.pdf
    • http://twentiesandconfused.com/uploads/1/3/0/2/130288600/gofukukililapexik.pdf
    • https://nasokixoguf.weebly.com/uploads/1/3/0/4/130483772/0e2d5d8.pdf
    • http://javuveb.dlymam.ru/uploads/2020/01/29/rogurizew.pdf
    • http://ndametest.weebly.com/uploads/1/3/0/3/130379651/8d643f98450c40.pdf
    • http://natural-wanders.com/uploads/1/3/0/3/130379423/rupipujipe_lidabat_razina.pdf
    • http://dididothat.net/uploads/1/3/0/5/130552106/26d530f1752dfdc.pdf
    • http://notimitak.bestpodsolnuh.ru/uploads/2020/01/28/337541.pdf
    • http://basketball-skills-training.com/uploads/1/3/0/2/130273846/japaloruzawituril.pdf
    • http://charlidrawz.com/uploads/1/3/0/3/130312964/130312964.html#rdrcef+application+error

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001309.bin
41f14904f0e6ec05b504e982e17bde0f0f902cc6eeb9663b80f5bc2a97b35cea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1309 9764 bytes

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