Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c26e11bb56be836…

MALICIOUS

PDF

37.0 KB Authoring application: PDFBox
MD5: 0e496fce552987282fa9bd91cba5e1c1 SHA-1: f977be1967103bf796dad2379b9e5540096fd807 SHA-256: 2c26e11bb56be83676e0ef8678f0fa135d56501cd7d38b0221c6f66c3308b341
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to external PDF files hosted on various domains, as indicated by the PDF_SEO_LINK_FARM heuristic. This suggests a phishing or malware distribution campaign leveraging SEO techniques. The ClamAV detection and ML classifier further support its malicious nature. No scripts were extracted from this sample, and the document body content was heavily truncated and unreadable.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://litfriendscandles.com/uploads/1/3/0/5/130588297/3671676.pdf
    • http://distributionhack.com/uploads/1/3/0/2/130274316/mimukezonaniveralew.pdf
    • http://kauffmancenterstore.net/uploads/1/3/0/7/130738758/wetevawobo-kasitofi.pdf
    • http://hutterhouse.org/uploads/1/3/0/5/130539114/gatesuzajasi.pdf
    • http://drainetfissures.com/uploads/1/3/0/4/130483302/55fe272776ad05e.pdf
    • http://shortcakescafe.com/uploads/1/3/0/7/130739577/kubugiwuxusodimivim.pdf
    • http://echoesofworth.org/uploads/1/3/0/7/130738631/simoro.pdf
    • http://customrenderprojects.com/uploads/1/3/0/5/130589348/jugaf-vomuxowa-fatusakeba.pdf
    • http://moongy.net/uploads/1/3/0/6/130604539/senoset.pdf
    • http://www.ladya.co/uploads/1/3/0/8/130814226/1090033.pdf
    • http://www.culingenious.com/uploads/1/3/0/7/130776852/balizitebonulefov.pdf
    • http://the-birn.com/uploads/1/3/0/6/130604226/d5ac9a1c.pdf
    • http://www.home-chi.com/uploads/1/3/0/4/130483761/minepadik.pdf
    • http://jesuspinata.com/uploads/1/3/0/5/130551053/7019110.pdf
    • http://navycapstore.com/uploads/1/3/0/5/130544591/vixedeguvovipabomi.pdf
    • http://directroofrestoration.com/uploads/1/3/0/3/130323377/130323377.html#how+to+write+cover+letter+for+customer+service+job
    • http://drainetfissures.com/uploads/1/3/0/4/130483302/55fe272776ad05e

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003457.bin
0faf3bd89136016e080b5e53d9e7b88a46eaa7fbf4ee24651ae15966b3d45c1a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3457 8456 bytes

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