Malicious PDF — malware analysis report

Static analysis result for SHA-256 3622c8e56dab1adf…

MALICIOUS

PDF

37.8 KB Authoring application: OpenOffice.org
MD5: 536c3ef98fbb4a9b2f62fde157b0381a SHA-1: fa52427118a8e1d01baea86dc907179602db522c SHA-256: 3622c8e56dab1adf4827499ad45ebc1c2a52c1d42b2ecaec48d0131dc8aa2407
128 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, identified as a link farm, disguised with text related to farm expense spreadsheets. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' strongly suggests a phishing or traffic redirection scheme. The presence of a visual download button further supports the lure to click on these links, which likely lead to malicious content.

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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://bfallard.com/uploads/1/3/0/5/130539357/49ac4a736.pdf
    • http://dream-maker-institute.com/uploads/1/3/0/4/130476499/bemiji.pdf
    • http://bev.audiostart29.icu/uploads/2020/01/29/gifivusujemuwazam.pdf
    • http://servicepartnervanderveenassen.nl/uploads/1/3/0/5/130588595/gofeweroniwubisipu.pdf
    • http://blanchardstevens.com/uploads/1/3/0/7/130740553/neramunaz.pdf
    • http://drbrewer.net/uploads/1/3/0/5/130538956/veruxidobi.pdf
    • http://suefordedtechportfolio.com/uploads/1/3/0/6/130639147/a1fe2f5750e6.pdf
    • http://kcbbc.org/uploads/1/3/0/5/130551904/e12711df.pdf
    • http://trfmontpelier.com/uploads/1/3/0/5/130590700/wimotuved-fagedifuxi-zetis.pdf
    • http://ndlobmac.com/uploads/1/3/0/6/130621209/wokotovofovejud-nogixerosazila-mawelaw-jugevaloxufanak.pdf
    • http://birthbydesigndoulas.com/uploads/1/3/0/5/130544243/130544243.html#farm+expense+spreadsheet+template+free

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001284.bin
0df49f83e81fe7a54aa63822e46c150d26a878135903769a36757b2334962d6d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1284 7292 bytes

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